WS256-4-7-16A — STUD,LOCKED IN

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

WS256-4-7-16A: STUD,LOCKED IN.

The STUD,LOCKED IN is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OR STEEL COMP 4340, thread_class: 3A STUD THREAD A, thread_length: 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM STUD THREAD IN, overall_length: 1.562 INCHES NOMINAL IN, shoulder_length: 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN, style_designator: LOCKED IN. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-016-2978, 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

WS256-4-7-16A

NSN: 5307-01-016-2978
FSC: 5307 — Studs
CAGE: 01556 — STANLEY ENGINEERED FASTENING LLC (USA)

SPECIFICATIONS

material	STEEL COMP E4340 OR STEEL COMP 4340
thread_class	3A STUD THREAD A
thread_length	0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM STUD THREAD IN
overall_length	1.562 INCHES NOMINAL IN
shoulder_length	0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
style_designator	LOCKED IN
thread_direction	RIGHT-HAND STUD THREAD
surface_treatment	PASSIVATE OVERALL
nominal_thread_size	0.375 INCHES STUD THREAD IN
thread_quantity_per_inch	16 STUD THREAD
thread_series_designator	UNF NUT THREAD
material_document_and_classification	MIL-S-5000 MIL SPEC ALL MATERIAL RESPONSES
NSN	5307-01-016-2978

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM NUT THREAD IN

•

STYLE DESIGNATOR: LOCKED IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5000 MIL SPEC ALL MATERIAL RESPONSES

•

THREAD DIRECTION: RIGHT-HAND STUD THREAD

TECHNICAL CHARACTERISTICS

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM NUT THREAD IN
THREAD LENGTH	0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM STUD THREAD IN
STYLE DESIGNATOR	LOCKED IN
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-5000 MIL SPEC ALL MATERIAL RESPONSES
OVERALL LENGTH	1.562 INCHES NOMINAL IN
THREAD DIRECTION	RIGHT-HAND STUD THREAD
THREAD DIRECTION	RIGHT-HAND NUT THREAD
NOMINAL THREAD SIZE	0.312 INCHES NUT THREAD IN
NOMINAL THREAD SIZE	0.375 INCHES STUD THREAD IN

OTHER ITEMS IN FSC 5307 — Studs

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5307-00-000-6436 5307-00-001-1578 5307-00-001-1761 5307-00-001-2366 5307-00-001-4491 5307-00-001-4624 5307-00-001-4625

SUBSTITUTES & CROSS-REFERENCES 2

881BW-5MD1000Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

502AS3415-01Same 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 WS256-4-7-16A?

WS256-4-7-16A is a STUD,LOCKED IN.

What parts can replace WS256-4-7-16A?

There are 2 known substitutes for WS256-4-7-16A: 881BW-5MD1000, 502AS3415-01. Substitute compatibility should be verified for your specific system.

What is the NSN for WS256-4-7-16A?

WS256-4-7-16A is cataloged in the U.S. Government catalog under NSN 5307-01-016-2978. This indicates validated use in U.S. government and defense supply chains.

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