21-381-1 — SWITCH,THERMOSTATIC

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

21-381-1: SWITCH,THERMOSTATIC.

The SWITCH,THERMOSTATIC is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1065, end_style: VERTEX OUTSIDE PERIPHERY, ring_style: STRAIGHT GAP, body_length: 0.612 INCHES NOMINAL IN, thread_class: 3A SINGLE THREADED BUSHING A, usage_design: EXTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-508-4675, 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

MRO→ MRO_GENERAL→ 21-381-1

NSN: 5325-00-508-4675
NIINs: 005084675, 008207167
FSC: 5325 — Fastening Devices
CAGE: 72447 — DANA COMMERCIAL VEHICLE MANUFACTURING, LLC DBA DANA COMMERCIAL VEHICLE PRODUCTS (USA)

SPECIFICATIONS

material	STEEL COMP 1065
end_style	VERTEX OUTSIDE PERIPHERY
ring_style	STRAIGHT GAP
body_length	0.612 INCHES NOMINAL IN
thread_class	3A SINGLE THREADED BUSHING A
usage_design	EXTERNAL
body_diameter	0.580 INCHES NOMINAL IN
terminal_type	CONNECTOR, RECEPTACLE
thread_length	0.622 INCHES NOMINAL SINGLE THREADED BUSHING IN
overall_length	1.757 INCHES NOMINAL IN
inside_diameter	1.406 INCHES MINIMUM AND 1.437 INCHES MAXIMUM IN
major_thickness	0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
NSN	5325-00-508-4675

COMPONENT DIAGRAM

KEY FEATURES

•

MATERIAL HARDNESS RATING: 42.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM

•

USAGE DESIGN: EXTERNAL

•

END STYLE: VERTEX OUTSIDE PERIPHERY

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633, AMEND. 2, FS-1065 FED SPEC SINGLE MATERIAL RESPONSE

•

CROSS-SECTIONAL SHAPE STYLE: ROUNDED CORNERS

•

OUTSIDE DIAMETER: 1.594 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN

•

MAJOR THICKNESS: 0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN

•

INSIDE DIAMETER: 1.406 INCHES MINIMUM AND 1.437 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

MATERIAL HARDNESS RATING	42.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM
USAGE DESIGN	EXTERNAL
END STYLE	VERTEX OUTSIDE PERIPHERY
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-633, AMEND. 2, FS-1065 FED SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLE	ROUNDED CORNERS
OUTSIDE DIAMETER	1.594 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
MAJOR THICKNESS	0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
INSIDE DIAMETER	1.406 INCHES MINIMUM AND 1.437 INCHES MAXIMUM IN
CASEHARDENING INDICATOR	NOT CASEHARDENED
RING STYLE	STRAIGHT GAP

SUBSTITUTES & CROSS-REFERENCES 4

2339T2Reference document

Same NSN cross-reference

Reference document — Secondary reference

5365005084675Reference document

Same NSN cross-reference

Reference document — Informative reference only

914363Reference document

Same NSN cross-reference

Reference document — Secondary reference

7520993Same 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 21-381-1?

21-381-1 is a SWITCH,THERMOSTATIC. It is classified as a MRO (MRO_GENERAL).

What parts can replace 21-381-1?

There are 4 known substitutes for 21-381-1: 2339T2, 5365005084675, 914363 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 21-381-1?

21-381-1 is cataloged in the U.S. Government catalog under NSN 5325-00-508-4675. This indicates validated use in U.S. government and defense supply chains.

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