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31W3118 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

31W3118: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 1.094 INCHES NOMINAL IN, point_style: BALL, point_length: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN, thread_class: 2A A. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-618-4574, 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
31W3118
NSN: 5305-00-618-4574
FSC: 5305 — Screws
CAGE: 62265 — VOLVO TRUCKS NORTH AMERICA, INC. DBA (FOREIGN PARENT IS VOLVO LASTVAGNAR AB, GOTEBORG, SWEDEN.) (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height1.094 INCHES NOMINAL IN
point_styleBALL
point_length0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
thread_class2A A
thread_length8.938 INCHES MAXIMUM IN
point_diameter1.062 INCHES NOMINAL IN
fastener_length9.094 INCHES MINIMUM AND 9.219 INCHES MAXIMUM IN
hardness_rating25.4 ROCKWELL C MINIMUM AND 32.1 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
width_between_flats1.750 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN
NSN5305-00-618-4574
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 31W3118 · 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
•
POINT DIAMETER: 1.062 INCHES NOMINAL IN
•
HEAD HEIGHT: 1.094 INCHES NOMINAL IN
•
POINT LENGTH: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
•
FASTENER LENGTH: 9.094 INCHES MINIMUM AND 9.219 INCHES MAXIMUM IN
•
THREAD LENGTH: 8.938 INCHES MAXIMUM IN
•
HARDNESS RATING: 25.4 ROCKWELL C MINIMUM AND 32.1 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 1.250 INCHES IN
TECHNICAL CHARACTERISTICS
POINT DIAMETER1.062 INCHES NOMINAL IN
HEAD HEIGHT1.094 INCHES NOMINAL IN
POINT LENGTH0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
FASTENER LENGTH9.094 INCHES MINIMUM AND 9.219 INCHES MAXIMUM IN
THREAD LENGTH8.938 INCHES MAXIMUM IN
HARDNESS RATING25.4 ROCKWELL C MINIMUM AND 32.1 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER1.250 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 1
401073Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 31W3118?
31W3118 is a SETSCREW.
What parts can replace 31W3118?
There is 1 known substitute for 31W3118: 401073. Substitute compatibility should be verified for your specific system.
What is the NSN for 31W3118?
31W3118 is cataloged in the U.S. Government catalog under NSN 5305-00-618-4574. 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.