12273976 — THUMBSCREW

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

12273976: THUMBSCREW.

The THUMBSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1015 OR STEEL COMP 1025 OVERALL, head_style: KNURLED NO. 4, head_height: 2.380 INCHES NOMINAL IN, point_style: OVAL, thread_class: 2A A, head_diameter: 1.250 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-074-8929, 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

12273976

NSN: 5305-01-074-8929
NIINs: 010748929, 015185372
FSC: 5305 — Screws
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)

SPECIFICATIONS

material	STEEL COMP 1015 OR STEEL COMP 1025 OVERALL
head_style	KNURLED NO. 4
head_height	2.380 INCHES NOMINAL IN
point_style	OVAL
thread_class	2A A
head_diameter	1.250 INCHES NOMINAL IN
thread_length	1.261 INCHES NOMINAL IN
shoulder_shape	HEXAGONAL FIRST SHOULDER
fastener_length	4.000 INCHES NOMINAL IN
shoulder_length	0.312 INCHES NOMINAL FIRST SHOULDER IN
thread_direction	RIGHT-HAND
surface_treatment	ENAMEL OVERALL
NSN	5305-01-074-8929

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 2.380 INCHES NOMINAL IN

•

FASTENER LENGTH: 4.000 INCHES NOMINAL IN

•

SHOULDER LENGTH: 0.312 INCHES NOMINAL FIRST SHOULDER IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-E-52798A MIL SPEC 1ST TREATMENT RESPONSE OR MIL-E-52835 MIL SPEC 2ND TREATMENT RESPONSE OVERALL A

•

THREAD LENGTH: 1.261 INCHES NOMINAL IN

•

SHOULDER SHAPE: HEXAGONAL FIRST SHOULDER

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A576 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A108 ASSN STD 2ND MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.500 INCHES IN

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	2.380 INCHES NOMINAL IN
FASTENER LENGTH	4.000 INCHES NOMINAL IN
SHOULDER LENGTH	0.312 INCHES NOMINAL FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-E-52798A MIL SPEC 1ST TREATMENT RESPONSE OR MIL-E-52835 MIL SPEC 2ND TREATMENT RESPONSE OVERALL A
THREAD LENGTH	1.261 INCHES NOMINAL IN
SHOULDER SHAPE	HEXAGONAL FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A576 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A108 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.500 INCHES IN
HEAD STYLE	KNURLED NO. 4
THREAD DIRECTION	RIGHT-HAND

SUBSTITUTES & CROSS-REFERENCES 1

5305010748929Reference document

Same NSN cross-reference

Reference document — Informative reference only

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 12273976?

12273976 is a THUMBSCREW.

What parts can replace 12273976?

There is 1 known substitute for 12273976: 5305010748929. Substitute compatibility should be verified for your specific system.

What is the NSN for 12273976?

12273976 is cataloged in the U.S. Government catalog under NSN 5305-01-074-8929. This indicates validated use in U.S. government and defense supply chains.

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