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648656 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

648656: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1095 OVERALL, hole_diameter: 1.510 INCHES NOMINAL1.510 INCHES NOMINAL IN, overall_height: 0.132 INCHES NOMINAL0.132 INCHES NOMINAL IN, outside_diameter: 1.790 INCHES NOMINAL1.790 INCHES NOMINAL IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, material_thickness: 0.032 INCHES NOMINAL0.032 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-015-7778, 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
648656
NSN: 5310-01-015-7778
FSC: 5310 — Nuts and Washers
CAGE: 3H889 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS (USA)
SPECIFICATIONS
materialSTEEL COMP 1095 OVERALL
hole_diameter1.510 INCHES NOMINAL1.510 INCHES NOMINAL IN
overall_height0.132 INCHES NOMINAL0.132 INCHES NOMINAL IN
outside_diameter1.790 INCHES NOMINAL1.790 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.032 INCHES NOMINAL0.032 INCHES NOMINAL IN
material_document_and_classificationMIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-015-7778
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 648656 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.790 INCHES NOMINAL1.790 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.032 INCHES NOMINAL0.032 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
MATERIAL: STEEL COMP 1095 OVERALL
•
HOLE DIAMETER: 1.510 INCHES NOMINAL1.510 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.132 INCHES NOMINAL0.132 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7947 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.790 INCHES NOMINAL1.790 INCHES NOMINAL IN
MATERIAL THICKNESS0.032 INCHES NOMINAL0.032 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL COMP 1095 OVERALL
HOLE DIAMETER1.510 INCHES NOMINAL1.510 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 648656?
648656 is a WASHER,SPRING TENSION.
What is the NSN for 648656?
648656 is cataloged in the U.S. Government catalog under NSN 5310-01-015-7778. 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.