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203940 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

203940: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.321 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN, overall_height: 0.055 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN, outside_diameter: 0.672 INCHES MINIMUM AND 0.682 INCHES MAXIMUM IN, material_thickness: 0.010 INCHES NOMINAL IN, material_document_and_classification: QQ-S-766 CL 4 COND E FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-705-7352, 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
203940
NSN: 5310-00-705-7352
NIINs: 007057352, 012673078
FSC: 5310 — Nuts and Washers
CAGE: 02978 — RENK AMERICA LLC DIV RENK AMERICA (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.321 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN
overall_height0.055 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
outside_diameter0.672 INCHES MINIMUM AND 0.682 INCHES MAXIMUM IN
material_thickness0.010 INCHES NOMINAL IN
material_document_and_classificationQQ-S-766 CL 4 COND E FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-705-7352
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 203940 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766 CL 4 COND E FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.672 INCHES MINIMUM AND 0.682 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.010 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
HOLE DIAMETER: 0.321 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.055 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766 CL 4 COND E FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.672 INCHES MINIMUM AND 0.682 INCHES MAXIMUM IN
MATERIAL THICKNESS0.010 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING OVERALL
HOLE DIAMETER0.321 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
5310007057352Reference document
Same NSN cross-reference
Reference document — Secondary 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 203940?
203940 is a WASHER,SPRING TENSION.
What parts can replace 203940?
There is 1 known substitute for 203940: 5310007057352. Substitute compatibility should be verified for your specific system.
What is the NSN for 203940?
203940 is cataloged in the U.S. Government catalog under NSN 5310-00-705-7352. 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.