42129-W381 — BOLT,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

42129-W381: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400 OVERALL, thread_class: 2A A, fastener_length: 2.750 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, nominal_thread_diameter: 0.875 INCHES IN, thread_series_designator: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5306-01-470-3072, 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

42129-W381

NSN: 5306-01-470-3072
FSC: 5306 — Bolts
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)

SPECIFICATIONS

material	NICKEL ALLOY 400 OVERALL
thread_class	2A A
fastener_length	2.750 INCHES NOMINAL IN
thread_direction	RIGHT-HAND
nominal_thread_diameter	0.875 INCHES IN
thread_quantity_per_inch	9
thread_series_designator	UNIFIED NATIONAL COARSE (UNC)
material_document_and_classification	QQ-N-281,CLASSA FED SPEC 1ST MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agency	NAVY SPECIAL PROJECT
NSN	5306-01-470-3072

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 2.750 INCHES NOMINAL IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281,CLASSA FED SPEC 1ST MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.875 INCHES IN

•

THREAD DIRECTION: RIGHT-HAND

•

THREAD CLASS: 2A A

•

THREAD QUANTITY PER INCH: 9

•

MATERIAL: NICKEL ALLOY 400 OVERALL

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	2.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-N-281,CLASSA FED SPEC 1ST MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.875 INCHES IN
THREAD DIRECTION	RIGHT-HAND
PART NAME ASSIGNED BY CONTROLLING AGENCY	NAVY SPECIAL PROJECT
THREAD CLASS	2A A
THREAD QUANTITY PER INCH	9
MATERIAL	NICKEL ALLOY 400 OVERALL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

SUBSTITUTES & CROSS-REFERENCES 2

253872 PC 13Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

253872Reference document

Same NSN cross-reference

Reference document — Drawing number 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 42129-W381?

42129-W381 is a BOLT,MACHINE.

What parts can replace 42129-W381?

There are 2 known substitutes for 42129-W381: 253872 PC 13, 253872. Substitute compatibility should be verified for your specific system.

What is the NSN for 42129-W381?

42129-W381 is cataloged in the U.S. Government catalog under NSN 5306-01-470-3072. This indicates validated use in U.S. government and defense supply chains.

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42129-W381 — BOLT,MACHINE

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