91253A357 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

91253A357: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK, head_diameter: 0.781 INCHES NOMINAL IN, thread_length: 1.250 INCHES NOMINAL IN, fastener_length: 1.250 INCHES NOMINAL IN, hardness_rating: 39.0 ROCKWELL C NOMINAL OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-563-3101, 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

91253A357

NSN: 5305-01-563-3101
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)

SPECIFICATIONS

material	STEEL OVERALL
head_style	FLAT COUNTERSUNK
head_diameter	0.781 INCHES NOMINAL IN
thread_length	1.250 INCHES NOMINAL IN
fastener_length	1.250 INCHES NOMINAL IN
hardness_rating	39.0 ROCKWELL C NOMINAL OVERALL
thread_direction	RIGHT-HAND
countersink_angle	82.0 DEGREES NOMINAL
width_across_flats	0.218 INCHES NOMINAL IN
internal_drive_style	HEXAGON
end_item_identification	MRAP - COUGAR CAT1 A2
minimum_tensile_strength	144 POUNDS PER SQUARE INCH LBS
NSN	5305-01-563-3101

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.218 INCHES NOMINAL IN

•

FASTENER LENGTH: 1.250 INCHES NOMINAL IN

•

THREAD LENGTH: 1.250 INCHES NOMINAL IN

•

HARDNESS RATING: 39.0 ROCKWELL C NOMINAL OVERALL

•

HEAD STYLE: FLAT COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

•

MINIMUM TENSILE STRENGTH: 144 POUNDS PER SQUARE INCH LBS

•

INTERNAL DRIVE STYLE: HEXAGON

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.218 INCHES NOMINAL IN
FASTENER LENGTH	1.250 INCHES NOMINAL IN
THREAD LENGTH	1.250 INCHES NOMINAL IN
HARDNESS RATING	39.0 ROCKWELL C NOMINAL OVERALL
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
MINIMUM TENSILE STRENGTH	144 POUNDS PER SQUARE INCH LBS
INTERNAL DRIVE STYLE	HEXAGON
COUNTERSINK ANGLE	82.0 DEGREES NOMINAL
END ITEM IDENTIFICATION	MRAP - COUGAR CAT1 A2

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 3

5305-3101Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

13014410-9Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

456720112400Reference document

Same NSN cross-reference

Reference document — Informative reference only

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 91253A357?

91253A357 is a SCREW,CAP,SOCKET HEAD.

What parts can replace 91253A357?

There are 3 known substitutes for 91253A357: 5305-3101, 13014410-9, 456720112400. Substitute compatibility should be verified for your specific system.

What is the NSN for 91253A357?

91253A357 is cataloged in the U.S. Government catalog under NSN 5305-01-563-3101. This indicates validated use in U.S. government and defense supply chains.

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91253A357 — SCREW,CAP,SOCKET HEAD

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