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99031R1 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

99031R1: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 3140H OR STEEL COMP 4042H OR STEEL COMP 4140 OVERALL, hole_type: DRILLED, head_style: SQUARE, head_height: 0.328 INCHES NOMINAL IN, point_style: FLAT, point_length: 0.438 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-752-1391, 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
99031R1
NSN: 5305-00-752-1391
FSC: 5305 — Screws
CAGE: 89346 — NAVISTAR INTL CORP TRUCK BR OHIO PLANT (USA)
SPECIFICATIONS
materialSTEEL COMP 3140H OR STEEL COMP 4042H OR STEEL COMP 4140 OVERALL
hole_typeDRILLED
head_styleSQUARE
head_height0.328 INCHES NOMINAL IN
point_styleFLAT
point_length0.438 INCHES NOMINAL IN
thread_class3A A
hole_diameter0.094 INCHES NOMINAL IN
hole_quantity2
thread_length0.609 INCHES MINIMUM IN
fastener_length1.047 INCHES NOMINAL IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
NSN5305-00-752-1391
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 99031R1 · 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
•
HEAD HEIGHT: 0.328 INCHES NOMINAL IN
•
POINT LENGTH: 0.438 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.047 INCHES NOMINAL IN
•
THREAD LENGTH: 0.609 INCHES MINIMUM IN
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
•
HOLE CONFIGURATION STYLE: SQUARE LONGITUDINAL HOLE
•
POINT CHAMFER ANGLE: 30.0 DEGREES MINIMUM AND 31.0 DEGREES MAXIMUM
•
NOMINAL THREAD DIAMETER: 0.438 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.328 INCHES NOMINAL IN
POINT LENGTH0.438 INCHES NOMINAL IN
FASTENER LENGTH1.047 INCHES NOMINAL IN
THREAD LENGTH0.609 INCHES MINIMUM IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
HOLE CONFIGURATION STYLESQUARE LONGITUDINAL HOLE
POINT CHAMFER ANGLE30.0 DEGREES MINIMUM AND 31.0 DEGREES MAXIMUM
NOMINAL THREAD DIAMETER0.438 INCHES IN
HEAD STYLESQUARE
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 4
913696Reference document
Same NSN cross-reference
Reference document — Secondary reference
KC5124Reference document
Same NSN cross-reference
Reference document — Secondary reference
5305007521391Reference document
Same NSN cross-reference
Reference document — Secondary reference
379B1Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 99031R1?
99031R1 is a SETSCREW.
What parts can replace 99031R1?
There are 4 known substitutes for 99031R1: 913696, KC5124, 5305007521391 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 99031R1?
99031R1 is cataloged in the U.S. Government catalog under NSN 5305-00-752-1391. 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.