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217973 — VALVE,CHECK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

217973: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include diameter: 0.250 INCHES NOMINAL IN, material: STEEL COMP 1008 OVERALL, style_designator: STANDARD, underloop_length: 1.250 INCHES NOMINAL IN, surface_treatment: CADMIUM OR ZINC OVERALL, material_document_and_classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-021-7973, 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
217973
NSN: 5315-00-021-7973
NIINs: 000217973, 014836370
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
diameter0.250 INCHES NOMINAL IN
materialSTEEL COMP 1008 OVERALL
style_designatorSTANDARD
underloop_length1.250 INCHES NOMINAL IN
surface_treatmentCADMIUM OR ZINC OVERALL
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-021-7973
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 217973 · 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
•
STYLE DESIGNATOR: STANDARD
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 0.250 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
UNDERLOOP LENGTH: 1.250 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1008 OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTANDARD
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.250 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
UNDERLOOP LENGTH1.250 INCHES NOMINAL IN
MATERIALSTEEL COMP 1008 OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 217973?
217973 is a VALVE,CHECK.
What is the NSN for 217973?
217973 is cataloged in the U.S. Government catalog under NSN 5315-00-021-7973. 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.