MS51840-23 — PLUG,MACHINE THREAD

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

MS51840-23: PLUG,MACHINE THREAD.

The PLUG,MACHINE THREAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 2A EXTERNAL A, thread_length: 0.360 INCHES NOMINAL EXTERNAL IN, connection_style: PLAIN, style_designator: PLUG, MACHINE, thread_direction: RIGHT-HAND EXTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 5365-00-549-6688, 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

MS51840-23

NSN: 5365-00-549-6688
NIINs: 005496688, 015454121, 016161167
FSC: 5365 — Bushings, Rings, Shims, and Spacers
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M

SPECIFICATIONS

material	STEEL OVERALL
thread_class	2A EXTERNAL A
thread_length	0.360 INCHES NOMINAL EXTERNAL IN
connection_style	PLAIN
style_designator	PLUG, MACHINE
thread_direction	RIGHT-HAND EXTERNAL
surface_treatment	CADMIUM OVERALL
nominal_thread_size	0.438 INCHES EXTERNAL IN
thread_quantity_per_inch	20 EXTERNAL
thread_series_designator	UNF EXTERNAL
NSN	5365-00-549-6688

COMPONENT DIAGRAM

KEY FEATURES

•

BODY CORE DIAMETER: 0.187 INCHES NOMINAL IN

•

HEAD HEIGHT: 0.295 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN

•

HEAD TYPE: SOLID

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

CONNECTION STYLE: PLAIN

•

CORE DEPTH: 0.437 INCHES NOMINAL IN

•

THREAD LENGTH: 0.250 INCHES NOMINAL EXTERNAL IN

•

STYLE DESIGNATOR: PLUG, MACHINE

TECHNICAL CHARACTERISTICS

BODY CORE DIAMETER	0.187 INCHES NOMINAL IN
HEAD HEIGHT	0.295 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
HEAD TYPE	SOLID
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLE	PLAIN
CORE DEPTH	0.437 INCHES NOMINAL IN
THREAD LENGTH	0.250 INCHES NOMINAL EXTERNAL IN
STYLE DESIGNATOR	PLUG, MACHINE
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH	0.650 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN

SUBSTITUTES & CROSS-REFERENCES 4

5365005496688Reference document

Same NSN cross-reference

Reference document — Secondary reference

0740820Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

MIL-F-18866Reference document

Same NSN cross-reference

Reference document — Secondary reference

MIL-DTL-18866Reference document

Same NSN cross-reference

Reference document — Identification 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 MS51840-23?

MS51840-23 is a PLUG,MACHINE THREAD.

What parts can replace MS51840-23?

There are 4 known substitutes for MS51840-23: 5365005496688, 0740820, MIL-F-18866 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for MS51840-23?

MS51840-23 is cataloged in the U.S. Government catalog under NSN 5365-00-549-6688. This indicates validated use in U.S. government and defense supply chains.

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