Questions tagged [fastener]

A piece of hardware whose only function is to physically hold something else on by applying a sustained force. Includes nuts, bolts, screws, clips and rivets.

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Stainless Steel Fasteners

In the past 6-months or so, I purchased this set of stainless steel hex head bolt fasteners. In the kit, they require you to install the bolts using "anti-seize as a regular practice". The seller ...
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12 votes
3 answers
27k views

What size hole should be drilled for an individual tap?

The other day while doing further work on my son's Subaru, I drilled a hole in a piece of angle iron then started using my 1/4-20 tap to cut some threads in the hole. The idea was to have a threaded ...
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12 votes
1 answer
8k views

Torx vs. Star Fasteners

I was looking for some Torx head fasteners and found some that claim to have "star" heads. They look like Torx heads… Are they the same? Has it really been long enough for the Torx patents to run ...
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9 votes
1 answer
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What fasteners should not be loosened using an impact wrench, and why?

Which bolts and other fasteners should not be loosened using an impact wrench? For example, I've heard that it's not generally recommended to loosen spark plugs with an impact. Nor is it recommended ...
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8 votes
4 answers
5k views

"Always Replace" (torque-to-yield) Bolts

I'm working on a VW Jetta and have pulled one of the suspension ball joints to replace a drive shaft. The three bolts holding the ball joint to the lower control arm are marked in the Bentley service ...
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7 votes
3 answers
5k views

Securing exhaust manifold studs?

Usually the issue is them getting rusted into place and breaking on removal. Well, I have the opposite problem. Properly installed and torqued studs with nuts are loosening themselves... The nut is ...
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7 votes
1 answer
136 views

In a clip, what does the "Stem Length" mean?

I am currently trying to find replacement fender clips for my car. The OEM part numbers are 01553-09321 (Nissan), 90044-68320 (Toyota), and MR328954 (Mitsubishi). I have the hole size (7.7mm), and ...
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6 votes
7 answers
19k views

Spring vs worm gear clamps?

I understand spring clamps are convenient to use on smaller hoses. However, my Tacoma came with them on even larger hoses, such as the radiator hoses, that are, I believe 1.25" and I can't seem to ...
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6 votes
3 answers
2k views

Air trapped inside threaded "blind" hole vs. hole integrity

I have seen this a few times: when screwing and tightening bolts in threaded "blind" holes (those not passing to the other side of the part) sometimes the air trapped inside gets compressed and the ...
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5 votes
4 answers
850 views

Removing rusted partially broken engine fasteners

This is the flange plate on one of my catalytic converters AKA exhaust manifolds where it joins the exhaust pipe. Before they broke off, the studs looked something like this, the driver head was ...
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5 votes
3 answers
2k views

Alternatives to left-handed thread without resorting to specialist tools

It turns out that the use of left-handed thread is not as uncommon as I once thought. Unfortunately, finding replacement left-handed nuts, bolts and screws isn't easy. A while back, I damaged the ...
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5 votes
2 answers
578 views

Torque specification thread lubricant best-practice as specified by manufacturers

I've been working recently from a Honda service manual. There are, of course, torque specifications documented for various fasteners used throughout the vehicle. I cannot find, however, any mention of ...
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  • 153
5 votes
3 answers
15k views

Can 1/2 drive impact wrenches be adapted to use 3/8 sockets?

I need to add a cordless impact wrench to my toolset do some exhaust work (loosen some really tight bolts, basically). I also plant to use it for CV joint-related work. They seem to be kind of pricey,...
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5 votes
3 answers
2k views

Is my Forester's caliper bracket bolt hole stripped?

While replacing my calipers and their mounting brackets, I passed a tap through the bolt holes on the wheel hub assembly that secure the bracket, to clean up the threads. The tap's movement felt ...
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5 votes
3 answers
2k views

Washers under head bolts: Should I use them under stud nuts?

In the parts manual for the engine I'm rebuilding (Skoda Estelle/120, RWD, rear mounted engine) I see they list washers for all the head bolts. I have changed the way to secure the head against the ...
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5 votes
3 answers
2k views

Securing rods for threading: how to avoid vice bites?

I'm working some steel rods into small studs, the problem is that when I tighten them in my vice, they get severely bitten by the vice's jaw blocks, leaving some nasty marks in the rods. I can live ...
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5 votes
1 answer
62 views

Head studs' threads larger length: problematic issue?

As I'm getting ready to (finally!) re-assemble this old engine (Skoda Estelle/120 '70s, RWD, rear mounted engine), I needed/wanted to change a few studs, but basically all of the head studs are ...
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5 votes
2 answers
204 views

how do I identify this bolt for local purchase?

This comes off of a DeWalt Powerwasher DP3750. The Dewalt part number is 18300. Specifications are 375-16X1.75 FL. They want 7 bucks for this bolt online. Drilling down here (to find later at ...
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4 votes
5 answers
2k views

Why do manufacturers use different bolt types on cylinder heads?

Why do manufacturers use nonstandard bolt head types? Is it just to make it more difficult to the DIY-er to get away from visiting a dealership? It was already too much work to dig down to the ...
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4 votes
1 answer
59 views

Sources of Torque-To-Yield bolts?

I'm wondering if there is such a thing as a "generic" torque-to-yield (TTY) bolt or if they are application specific and have to be sourced through the dealer/manufacturer? What happens when a car is ...
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4 votes
1 answer
268 views

Bolts vs. rivets for securing swing arm rubber bushing mount

The rear swing arms on my car have the mount for the rubber bushings riveted to the arm. It is a pain in the neck to replace the bushings, since you need to bring the whole arm to the rubber workshop. ...
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3 votes
3 answers
1k views

What is "non-hardening thread locker"?

I'm familiar with a number of different colors of thread locker and the strength/usage guidelines. I've never heard of "hardening" vs. "non-hardening" until today though. The front sprocket ...
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3 votes
1 answer
257 views

Con rod fastener's washers: tabbed or spring washers?

The engine I'm rebuilding (Skoda Estelle/120, 70's, RWD, rear mounted engine) has a mix of different washers in its con rod bolts: some were tabbed washers, other spring washers... two or three bolts ...
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3 votes
1 answer
147 views

Problem installing rivet nuts

I'm trying to install aluminum rivet nuts for some 8-32 hex screws. I don't have the special tool so I'm trying to do it with a nut and 2 wrenches. The problem I'm having is that the screws keep ...
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3 votes
2 answers
7k views

Ideas for removing a broken screw in battery hold down?

I was installing a battery and ended up doing this while putting the clamp over the battery: As you can see, I overtightened and the screw went right through the hole (I think?). The thing I'm ...
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2 votes
2 answers
7k views

Bolt reaches end of hole but threads don't grip

Is there anything I can use short of Helicoil, which I'm really hoping not to have to use, to make sure a bolt sits in its threaded socket in my engine block and torques to spec ? The problem that I ...
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  • 6,415
2 votes
1 answer
45 views

Torque for engine mount stud

I replaced the upper engine mount for my 2000 Saturn SL2. The mount is attached via three nuts to studs in the engine block. While removing the old mount, one of the studs unscrewed instead of the ...
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2 votes
2 answers
2k views

Is it bad if gasket maker gets into bolt holes?

My timing chain cover does not use a solid gasket, instead it relies on gasket maker, which is caulk-like paste. The cover is fastened by something around 20 bolts. I am curious how bad can it be if ...
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  • 6,415
2 votes
1 answer
48 views

Understanding "torque-to-yield" concept

Can you help me understand the general "torque-to-yield" concept, which is often used for head bolts. In the case of my Tacoma, the head bolts are specified to be torqued to a spec of 27 ft/...
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  • 6,415
2 votes
1 answer
72 views

Correct Tap for Threading Hole in my Van

I have a brand new 2018 Ford Transit cargo van that came without a passenger seat; the van was ordered as a fleet vehicle for some purpose that didn't require a front passenger seat. I'm now ...
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2 votes
1 answer
47 views

Tightening sequence, is the pattern crucial when going from inside out?

I know the importance of tightening in a star pattern/from inside out, but there could be more than one pattern and it has me overthinking a bit. For example I’ve included two pictures with two ...
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  • 615
2 votes
1 answer
126 views

Modify transaxle tip to have splines instead of key slot

The car I'm rebuilding, an old Skoda Estelle with rear mounted engine, have transmissions axles that uses a key to secure the wheel hub. Its tip is conical, as the hub whole. The problem is that it ...
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  • 3,296
2 votes
1 answer
3k views

Installing Moog stabilizer / sway bar links on 2002 Ford Focus

I am installing both front sway bar links on my 2002 Ford Focus SE wagon. I ordered a pair of "MOOG K80066 Stabilizer Bar Link Kits". They did not come with any instructions, and I am totally new to ...
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  • 433
2 votes
1 answer
67 views

CBR-600 F3 1998 Ignition Barrel Replacement

my lads CBR-600F3 1998 ignition barrel has got so badly corroded we can't use the existing key. Locksmith has had a look at it and can't do anything. So I am looking to replace the barrel. I've seen ...
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1 vote
2 answers
166 views

Fastener on 2017 VW Jetta won’t screw back in after replacing light bulbs

I have a fastener that is screwed into the taillight for my 2017 Jetta. I successfully replaced a bulb but the screw won’t screw back in. I confirmed it’s an issue with the screw as another screw ...
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1 vote
1 answer
58 views

Screw to adjust choke, accelerator, etc wire: how is it called?

What's the name of this kind of "screw"? which comes with a pass through hole where a wire is inserted and secured by tighten a nut, or the screw itself. This is used in devices like carburetor choke ...
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  • 3,296
1 vote
1 answer
88 views

What to use to replace rivet on floor jack rear wheel assembly?

I have a CRAFTSMAN 3 Ton Floor Jack that I'm refurbishing. I've removed the rivets from the rear wheel assemblies to make it easier to paint. What should I use to replace the rivets? Part -...
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1 vote
1 answer
77 views

Can a "sticks-and-tin" RV be safely driven with part of the stapled-on 1x2 interior framing missing, or is the framing required for siding attachment?

I am currently looking at a used RV which is for sale in my area. The current owner was in the process of redoing the interior, which means that most of the interior framing on one side of the rear of ...
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0 votes
1 answer
26 views

Citroen C3 - How to read the solenoid screw size?

I just need some guidance in how to read the "Self Tap screw" size used to tighten the Exhaust solenoid on my Citroen. I have lost the screw. The Part number of the screw is 6923C6 with the ...
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0 votes
1 answer
45 views

how to install body brake light retainer nut

This is the retainer nut for a center high brake lamp on the roof of a ford van (2008 e350) Here is a link showing this nut and the assembly in which it goes. In the assembly diagram its labeled &...
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0 votes
1 answer
67 views

How big a difference is a 0.25mm thread pitch on a bolt?

I've ordered 2 new caliper carrier bolts but they won't arrive today as I needed. I've found a high tensile steel bolt of the same length and width but a difference of 0.25mm thread pitch and yes it's ...
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  • 117
0 votes
2 answers
83 views

Motorbike: Least worst option for stuck front sprocket bolt?

Had a particularly stubborn front sprocket nut the other day, wouldn't budge with the rear brake - breaker bar combination. Tried giving it 5min of blowtorch heat, didn't help. Then, even with my pal ...
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  • 33
0 votes
1 answer
200 views

Motorcycle frame slider bolt breaking off too often

I use Puig R12 frame sliders on my Yamaha R3 motorcycle. The frame sliders are held in place by 12.9 grade stainless steel bolts (https://www.boltdepot.com/fastener-information/materials-and-grades/...
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0 votes
1 answer
97 views

How to Correctly Prep for Dry or Wet Torque Specifications

Kind of two questions, but simple. If a dry torque specification is given for a fastener, what can I use to properly clean the threads before tightening to torque? If a wet torque specification ...
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  • 133
0 votes
1 answer
57 views

What's is this part? [closed]

This appears to possibly be for a piece of farm equipment. I have no idea what it does. If any one out there can help I would really appreciate it. g
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  • 1
0 votes
2 answers
122 views

How to match a nut to this threaded stud (gaps in thread)

Context The attached photo is a stud in the roof of my vehicle, to which I wish to attach a roof rack. The roof rack should come with nuts to attach it, but they are missing. I need to find an ...
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  • 151
0 votes
2 answers
98 views

Water pump mounting bolt feels wrong. (Ecotec)

('07 Cobalt LS, vanilla 2.2, 70K mile) Putting the timing chain cover back on. [1] One bolt goes through the cover into the water pump. Initially, it threads OK (not cross-threaded); But, when I get ...
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  • 887
0 votes
0 answers
266 views

I damaged a caliper slide pin bolt, should I replace the whole pin?

When replacing the brake pads and discs on a 2006 1.3 Suzuki ignis I damaged a bolt which fastens the caliper onto its mounting bracket. The bolt was stuck on and I thought it probably needed ...
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