91253A003 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

91253A003: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_height: 0.127 INCHES NOMINAL IN, head_diameter: 0.411 INCHES NOMINAL IN, thread_length: 0.5 INCHES NOMINAL IN, width_across_flats: 0.125 INCHES NOMINAL IN, internal_drive_style: HEXAGON. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-389-7979, 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

91253A003

NSN: 5305-01-389-7979
NIINs: 013897979, 016986498
FSC: 5305 — Screws
CAGE: 84021 — THE ESAB GROUP INC. DBA ESAB WELDING & CUTTING PRODUCTS DIV ESAB WELDING AND CUTTING (USA)

SPECIFICATIONS

material	STEEL OVERALL
head_height	0.127 INCHES NOMINAL IN
head_diameter	0.411 INCHES NOMINAL IN
thread_length	0.5 INCHES NOMINAL IN
width_across_flats	0.125 INCHES NOMINAL IN
internal_drive_style	HEXAGON
nominal_thread_diameter	0.19 INCHES IN
part_name_assigned_by_controlling_agency	SCREW, CAP, SOCKET HEAD
NSN	5305-01-389-7979

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 0.500 INCHES NOMINAL IN

•

THREAD LENGTH: 0.500 INCHES MAXIMUM IN

•

HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL

•

MATERIAL DOCUMENT AND CLASSIFICATION: SAE GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.190 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

•

COLOR: BLACK OVERALL

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	0.500 INCHES NOMINAL IN
THREAD LENGTH	0.500 INCHES MAXIMUM IN
HARDNESS RATING	39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	SAE GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.190 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
COLOR	BLACK OVERALL
SURFACE TREATMENT	OXIDE OVERALL
MINIMUM TENSILE STRENGTH	180000 POUNDS PER SQUARE INCH LBS

SUBSTITUTES & CROSS-REFERENCES 2

FC5-10-32X0.50SZSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

91254A242Reference document

Same NSN cross-reference

Reference document — Secondary 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 91253A003?

91253A003 is a SCREW,CAP,SOCKET HEAD.

What parts can replace 91253A003?

There are 2 known substitutes for 91253A003: FC5-10-32X0.50SZ, 91254A242. Substitute compatibility should be verified for your specific system.

What is the NSN for 91253A003?

91253A003 is cataloged in the U.S. Government catalog under NSN 5305-01-389-7979. This indicates validated use in U.S. government and defense supply chains.

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91253A003 — SCREW,CAP,SOCKET HEAD

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