Help! Do you recognize me? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

truckster · 09-22-2025, 03:38 PM

I found this bolt where I normally park my Blazer. I don't recognize it, and if it did come off the Blazer, I don't know where it came from. The head is 1/2", the threads measure out to 5/16-24 (I don't have a 5/16-24 nut on hand to verify it) and the overall length below the head is just over 1".

Any help would be appreciated.

Keith Seymore · 09-22-2025, 03:43 PM

Looks kinda like a seat belt or shoulder harness bolt.

K

truckster · 09-22-2025, 04:39 PM

My Blazer didn't have a rear seat when I got it. I suppose it could have been hiding in some nook or cranny for all these years and just dropped out now.

It's not like any bolt I remember seeing on any of the Chevy or GMC trucks I've owned. I'm really curious.

**Palf70Step** · 09-22-2025, 05:28 PM

Quote:

Originally Posted by Keith Seymore

Looks kinda like a seat belt or shoulder harness bolt.

K

That is my same thought.

**Orefactory4x4 swb** · 09-22-2025, 05:44 PM

That it. Just installed some

truckster · 09-22-2025, 05:56 PM

Quote:

Originally Posted by Orefactory4x4 swb

That it. Just installed some

Is it for the rear seat? I know the fronts are 1/2 inch threads.

It's weird to think it's been hiding somewhere for the 18 years I've owned my Blazer. Maybe it was sitting on the gas tank, because that's about the only part I haven't had out of it.

**57taskforce** · 09-22-2025, 06:49 PM

NP205 shifter bolt??? my guess anyway. Although 5/16 is too small for the shifter bolt… yeah seat/seatbelt bolt… I’ll go with that lol.

**zicc1835** · 09-22-2025, 08:10 PM

check this out..... holds the junction block rear brake lines...???

truckster · 09-22-2025, 08:51 PM

Quote:

Originally Posted by zicc1835

check this out..... holds the junction block rear brake lines...???

That sounds plausible - it seems like the thread size might match, but it's still there.

**basketcase** · 09-22-2025, 09:01 PM

A lot of undisturbed rust on the threads. It hasn't been in anything for a long time. Seat belts are 1/2"-13.

**Rust_never_sleeps** · 09-22-2025, 09:33 PM

Quote:

Originally Posted by basketcase

A lot of undisturbed rust on the threads. It hasn't been in anything for a long time. Seat belts are 1/2"-13.

That's what I was thinking. Whatever it once did ain't been done in a while

truckster · 09-22-2025, 09:48 PM

Quote:

Originally Posted by Rust_never_sleeps

That's what I was thinking. Whatever it once did ain't been done in a while

That's for sure. It's more curiosity than concern. I've been through everything mechanical from bumper to bumper. I just don't remember seeing anything like it.

**zicc1835** · 09-22-2025, 09:50 PM

Quote:

Originally Posted by Rust_never_sleeps

That's what I was thinking. Whatever it once did ain't been done in a while

**Richard** · 09-22-2025, 10:32 PM

Door latch pawl pin? Not for the 67-72 though.

**Getter-Done** · 09-22-2025, 11:05 PM

That bolt may have been dropped in the assembly process at the factory.

Then finally found its way out after all these years.

I worked at an assembly plant for several years and Stuff Happens.

**67 twins** · 09-23-2025, 02:57 AM

Quote:

Originally Posted by Rust_never_sleeps

That's what I was thinking. Whatever it once did ain't been done in a while

Except that's 67s are 7/16. The restoration companies don't know this or don't care. If you buy a kit for belts the bolts don't fit.

09-22-2025, 03:38 PM	#1
truckster Registered User Join Date: Jan 2001 Location: Orem, Utah Posts: 8,265	Help! Do you recognize me? I found this bolt where I normally park my Blazer. I don't recognize it, and if it did come off the Blazer, I don't know where it came from. The head is 1/2", the threads measure out to 5/16-24 (I don't have a 5/16-24 nut on hand to verify it) and the overall length below the head is just over 1". Any help would be appreciated. Attached Images __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson 1972 K/5 Blazer CST 4WD 1963 Corvair Monza Spyder Turbo convertible 1995 Camaro Z/28

09-22-2025, 03:43 PM	#2
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,490	Re: Help! Do you recognize me? Looks kinda like a seat belt or shoulder harness bolt. K __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

09-22-2025, 04:39 PM	#3
truckster Registered User Join Date: Jan 2001 Location: Orem, Utah Posts: 8,265	Re: Help! Do you recognize me? My Blazer didn't have a rear seat when I got it. I suppose it could have been hiding in some nook or cranny for all these years and just dropped out now. It's not like any bolt I remember seeing on any of the Chevy or GMC trucks I've owned. I'm really curious. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson 1972 K/5 Blazer CST 4WD 1963 Corvair Monza Spyder Turbo convertible 1995 Camaro Z/28

09-22-2025, 05:44 PM	#5
Orefactory4x4 swb Senior Member Join Date: Mar 2023 Location: Springfield oregon Posts: 385	Re: Help! Do you recognize me? That it. Just installed some

09-22-2025, 06:49 PM	#7
57taskforce All about them K’s Join Date: Jun 2014 Location: Land of Entrapment Posts: 6,978	Re: Help! Do you recognize me? NP205 shifter bolt??? my guess anyway. Although 5/16 is too small for the shifter bolt… yeah seat/seatbelt bolt… I’ll go with that lol. __________________ Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 35x12.5x20’s

09-22-2025, 08:10 PM	#8
zicc1835 Senior Member Join Date: Mar 2011 Location: Hanover NJ Posts: 4,842	Re: Help! Do you recognize me? check this out..... holds the junction block rear brake lines...??? Attached Images __________________ Grand Theft Auto https://67-72chevytrucks.com/vboard/...d.php?t=855961 Doc & Kim build http://67-72chevytrucks.com/vboard/s...d.php?t=722288 I am from the desert http://67-72chevytrucks.com/vboard/s...d.php?t=650332 basket case build SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=648557

09-22-2025, 09:01 PM	#10
basketcase Senior Member Join Date: Oct 2001 Location: Edgerton OH USA Posts: 687	Re: Help! Do you recognize me? A lot of undisturbed rust on the threads. It hasn't been in anything for a long time. Seat belts are 1/2"-13. __________________ '69 swb stepside in progress. '59 Corvette lifetime project

09-22-2025, 10:32 PM	#14
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 3,346	Re: Help! Do you recognize me? Door latch pawl pin? Not for the 67-72 though. __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746

09-22-2025, 11:05 PM	#15
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 9,873	Re: Help! Do you recognize me? That bolt may have been dropped in the assembly process at the factory. Then finally found its way out after all these years. I worked at an assembly plant for several years and Stuff Happens. __________________ ________________________________________________________________________________________ ____________________________________________ The early bird gets the worm, But the second mouse gets the cheese 85 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build



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