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148321 — SWITCH,THERMOSTATIC

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

148321: SWITCH,THERMOSTATIC.

The SWITCH,THERMOSTATIC is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thickness: 0.032 INCHES NOMINAL IN, hole_diameter: 0.703 INCHES NOMINAL IN, overall_width: 1.000 INCHES NOMINAL IN, terminal_type: CONNECTOR, RECEPTACLE, heat_treatment: COLD DRAWN 1/4 HARD CONDITION. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-437-2249, 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→ 148321
NSN: 5310-00-437-2249
NIINs: 004372249, 009389013, 014509841
FSC: 5310 — Nuts and Washers
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thickness0.032 INCHES NOMINAL IN
hole_diameter0.703 INCHES NOMINAL IN
overall_width1.000 INCHES NOMINAL IN
terminal_typeCONNECTOR, RECEPTACLE
heat_treatmentCOLD DRAWN 1/4 HARD CONDITION
overall_height2.840 INCHES NOMINAL IN
overall_length2.120 INCHES NOMINAL IN
mounting_methodCLAMP
overall_diameter0.940 INCHES NOMINAL IN
special_featuresNOT PROVIDED WITH VISUAL INDICATING THERMOMETER
contact_adjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
NSN5310-00-437-2249
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 148321 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL DIAMETER: 0.940 INCHES NOMINAL IN
•
HEAT TREATMENT: COLD DRAWN 1/4 HARD CONDITION
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.703 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.940 INCHES NOMINAL IN
HEAT TREATMENTCOLD DRAWN 1/4 HARD CONDITION
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL CORROSION RESISTING OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.703 INCHES NOMINAL IN
THICKNESS0.032 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 148321?
148321 is a SWITCH,THERMOSTATIC. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 148321?
148321 is cataloged in the U.S. Government catalog under NSN 5310-00-437-2249. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.