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91309A724 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91309A724: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.312 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 2.786 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN, fastener_length: 2.940 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-236-1670, 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
91309A724
NSN: 5305-01-236-1670
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.312 INCHES NOMINAL IN
thread_class2A A
thread_length2.786 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN
fastener_length2.940 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentZINC OR CADMIUM OVERALL
width_between_flats0.750 INCHES NOMINAL IN
nominal_thread_diameter0.500 INCHES IN
minimum_tensile_strength74000 POUNDS PER SQUARE INCH LBS
thread_quantity_per_inch13
NSN5305-01-236-1670
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91309A724 · 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: 0.312 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.940 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN
•
THREAD LENGTH: 2.786 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE GRADE 2 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.312 INCHES NOMINAL IN
FASTENER LENGTH2.940 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN
THREAD LENGTH2.786 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GRADE 2 ASSN STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL IN
SURFACE TREATMENTZINC OR CADMIUM OVERALL
MINIMUM TENSILE STRENGTH74000 POUNDS PER SQUARE INCH LBS
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 2
8457666-1Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
1/2-13X3UNC-2A,ALL THREADReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91309A724?
91309A724 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 91309A724?
There are 2 known substitutes for 91309A724: 8457666-1, 1/2-13X3UNC-2A,ALL THREAD. Substitute compatibility should be verified for your specific system.
What is the NSN for 91309A724?
91309A724 is cataloged in the U.S. Government catalog under NSN 5305-01-236-1670. 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.