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91771A630 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91771A630: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: KNURLED NO. 3, head_height: 0.230 INCHES NOMINAL IN, thread_length: 1.520 INCHES NOMINAL IN, screw_material: STEEL CORROSION RESISTING, fastener_length: 1.750 INCHES NOMINAL IN, countersink_angle: 82.0 DEGREES NOMINAL.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-482-8000, 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
91771A630
NSN: 5305-01-482-8000
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
head_styleKNURLED NO. 3
head_height0.230 INCHES NOMINAL IN
thread_length1.520 INCHES NOMINAL IN
screw_materialSTEEL CORROSION RESISTING
fastener_length1.750 INCHES NOMINAL IN
countersink_angle82.0 DEGREES NOMINAL
end_item_identification5855014759444
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
NSN5305-01-482-8000
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91771A630 · 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: 0.230 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.750 INCHES NOMINAL IN
•
THREAD LENGTH: 1.520 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: KNURLED NO. 3
•
SCREW MATERIAL: STEEL CORROSION RESISTING
•
COUNTERSINK ANGLE: 82.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.230 INCHES NOMINAL IN
FASTENER LENGTH1.750 INCHES NOMINAL IN
THREAD LENGTH1.520 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEKNURLED NO. 3
SCREW MATERIALSTEEL CORROSION RESISTING
COUNTERSINK ANGLE82.0 DEGREES NOMINAL
END ITEM IDENTIFICATION5855014759444
THREAD QUANTITY PER INCH16
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

No substitute or cross-reference records for this part.

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 91771A630?
91771A630 is a SCREW,MACHINE.
What is the NSN for 91771A630?
91771A630 is cataloged in the U.S. Government catalog under NSN 5305-01-482-8000. 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.