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3138812-1 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3138812-1: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1095 OVERALL, hole_diameter: 0.440 INCHES NOMINAL0.440 INCHES NOMINAL IN, overall_height: 0.040 INCHES NOMINAL0.040 INCHES NOMINAL IN, outside_diameter: 0.618 INCHES NOMINAL0.618 INCHES NOMINAL IN, special_features: CONSISTS OF 3 WAVES WITH LOAD DEFLECTION OF 3 TO 5 LB. WTCONSISTS OF 3 WAVES WITH LOAD DEFLECTION OF 3 TO 5 LB.

WT LBS, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S. Government catalog under NSN 5310-01-041-7121, 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
3138812-1
NSN: 5310-01-041-7121
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 1095 OVERALL
hole_diameter0.440 INCHES NOMINAL0.440 INCHES NOMINAL IN
overall_height0.040 INCHES NOMINAL0.040 INCHES NOMINAL IN
hardness_rating471.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 471.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 598.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM598.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM
outside_diameter0.618 INCHES NOMINAL0.618 INCHES NOMINAL IN
special_featuresCONSISTS OF 3 WAVES WITH LOAD DEFLECTION OF 3 TO 5 LB. WTCONSISTS OF 3 WAVES WITH LOAD DEFLECTION OF 3 TO 5 LB. WT LBS
surface_treatmentCADMIUM OVERALL
material_thickness0.025 INCHES NOMINAL0.025 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-P-416 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-041-7121
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3138812-1 · 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 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 471.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 471.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 598.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM598.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM
•
OUTSIDE DIAMETER: 0.618 INCHES NOMINAL0.618 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.025 INCHES NOMINAL0.025 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL COMP 1095 OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.040 INCHES NOMINAL0.040 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING471.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 471.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 598.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM598.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM
OUTSIDE DIAMETER0.618 INCHES NOMINAL0.618 INCHES NOMINAL IN
MATERIAL THICKNESS0.025 INCHES NOMINAL0.025 INCHES NOMINAL IN
SPECIAL FEATURESCONSISTS OF 3 WAVES WITH LOAD DEFLECTION OF 3 TO 5 LB. WTCONSISTS OF 3 WAVES WITH LOAD DEFLECTION OF 3 TO 5 LB. WT LBS
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 1095 OVERALL
HOLE DIAMETER0.440 INCHES NOMINAL0.440 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3138812-1?
3138812-1 is a WASHER,SPRING TENSION.
What is the NSN for 3138812-1?
3138812-1 is cataloged in the U.S. Government catalog under NSN 5310-01-041-7121. 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.