91251A173 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

91251A173: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: FLAT FILLISTER, head_diameter: 0.205 INCHES NOMINAL IN, fastener_length: 1.250 INCHES NOMINAL IN, special_features: USED ON MIT842-349521-204, COLLAR, PULLER ASSEMBLY, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-659-3458, 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

91251A173

NSN: 5305-01-659-3458
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING OVERALL
head_style	FLAT FILLISTER
head_diameter	0.205 INCHES NOMINAL IN
fastener_length	1.250 INCHES NOMINAL IN
special_features	USED ON MIT842-349521-204, COLLAR, PULLER ASSEMBLY
thread_direction	RIGHT-HAND
surface_treatment	OXIDE OVERALL
internal_drive_style	HEXAGON
end_item_identification	KC-46A SUPPORT EQUIPMENT A
nominal_thread_diameter	0.125 INCHES IN
thread_quantity_per_inch	40
thread_series_designator	UNIFIED NATIONAL COARSE (UNC)
NSN	5305-01-659-3458

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 1.250 INCHES NOMINAL IN

•

NOMINAL THREAD DIAMETER: 0.125 INCHES IN

•

HEAD STYLE: FLAT FILLISTER

•

THREAD DIRECTION: RIGHT-HAND

•

COLOR: BLACK OVERALL

•

SURFACE TREATMENT: OXIDE OVERALL

•

INTERNAL DRIVE STYLE: HEXAGON

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	1.250 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER	0.125 INCHES IN
HEAD STYLE	FLAT FILLISTER
THREAD DIRECTION	RIGHT-HAND
COLOR	BLACK OVERALL
SPECIAL FEATURES	USED ON MIT842-349521-204, COLLAR, PULLER ASSEMBLY
SURFACE TREATMENT	OXIDE OVERALL
INTERNAL DRIVE STYLE	HEXAGON
PART NAME ASSIGNED BY CONTROLLING AGENCY	BLACK-OXIDE ALLOY STEEL SOCKET HEAD
END ITEM IDENTIFICATION	KC-46A SUPPORT EQUIPMENT A

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 1

MIT842-349521-220Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 91251A173?

91251A173 is a SCREW,CAP,SOCKET HEAD.

What parts can replace 91251A173?

There is 1 known substitute for 91251A173: MIT842-349521-220. Substitute compatibility should be verified for your specific system.

What is the NSN for 91251A173?

91251A173 is cataloged in the U.S. Government catalog under NSN 5305-01-659-3458. This indicates validated use in U.S. government and defense supply chains.

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91251A173 — SCREW,CAP,SOCKET HEAD

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