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870531R1 — SCREW,BRAKE ADJUSTING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

870531R1: SCREW,BRAKE ADJUSTING.

The SCREW,BRAKE ADJUSTING is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5305-00-040-2497, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
870531R1
NSN: 5305-00-040-2497
FSC: 5305 — Screws
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,1.688 IN. O/A LG,1ST END 1ST STEP 0.318 IN. DIA,2ND STEP THREADED 0.375-24 NF-3,3RD STEP 0.496 IN. DIA,2ND END 1ST STEP 0.441 IN. DIA,2ND STEP 0.875 IN. DIA,ECCENTRIC IN
NSN5305-00-040-2497
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 870531R1 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,1.688 IN. O/A LG,1ST END 1ST STEP 0.318 IN. DIA,2ND STEP THREADED 0.375-24 NF-3,3RD STEP 0.496 IN. DIA,2ND END 1ST STEP 0.441 IN. DIA,2ND STEP 0.875 IN. DIA,ECCENTRIC IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,1.688 IN. O/A LG,1ST END 1ST STEP 0.318 IN. DIA,2ND STEP THREADED 0.375-24 NF-3,3RD STEP 0.496 IN. DIA,2ND END 1ST STEP 0.441 IN. DIA,2ND STEP 0.875 IN. DIA,ECCENTRIC IN
SUBSTITUTES & CROSS-REFERENCES 2
302691Reference document
Same NSN cross-reference
Reference document — Secondary reference
00218-0126-14Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 870531R1?
870531R1 is a SCREW,BRAKE ADJUSTING.
What parts can replace 870531R1?
There are 2 known substitutes for 870531R1: 302691, 00218-0126-14. Substitute compatibility should be verified for your specific system.
What is the NSN for 870531R1?
870531R1 is cataloged in the U.S. Government catalog under NSN 5305-00-040-2497. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.