PartsTable
Technical Data Sheet
Download PDF

74A731255-2001 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

74A731255-2001: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING FEATURE, head_style: FLAT CHAMFER, head_height: 0.750 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 1.250 INCHES NOMINAL IN, thread_length: 1.170 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-309-7039, 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
74A731255-2001
NSN: 5305-01-309-7039
FSC: 5305 — Screws
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING FEATURE
head_styleFLAT CHAMFER
head_height0.750 INCHES NOMINAL IN
thread_class3A A
head_diameter1.250 INCHES NOMINAL IN
thread_length1.170 INCHES NOMINAL IN
fastener_length6.340 INCHES NOMINAL IN
locking_featurePATCH THREADS
thread_directionRIGHT-HAND
width_across_flats0.378 INCHES MINIMUM AND 0.383 INCHES MAXIMUM IN
internal_drive_styleSQUARE
nominal_thread_diameter0.750 INCHES IN
NSN5305-01-309-7039
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 74A731255-2001 · 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
•
WIDTH ACROSS FLATS: 0.378 INCHES MINIMUM AND 0.383 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.750 INCHES NOMINAL IN
•
FASTENER LENGTH: 6.340 INCHES NOMINAL IN
•
THREAD LENGTH: 1.170 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.378 INCHES MINIMUM AND 0.383 INCHES MAXIMUM IN
HEAD HEIGHT0.750 INCHES NOMINAL IN
FASTENER LENGTH6.340 INCHES NOMINAL IN
THREAD LENGTH1.170 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5629 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
NOMINAL THREAD DIAMETER0.750 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPATCH THREADS
INTERNAL DRIVE STYLESQUARE
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 1
741731255-2001Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 74A731255-2001?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 74A731255-2001?
74A731255-2001 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 74A731255-2001?
There is 1 known substitute for 74A731255-2001: 741731255-2001. Substitute compatibility should be verified for your specific system.
What is the NSN for 74A731255-2001?
74A731255-2001 is cataloged in the U.S. Government catalog under NSN 5305-01-309-7039. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 74A731255-2001

✓ 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.