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99-1013781 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

99-1013781: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.048 INCHES NOMINAL IN, hole_diameter: 0.328 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN, overall_diameter: 0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN, surface_treatment: CADMIUM OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-437-8693, 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
99-1013781
NSN: 5310-00-437-8693
FSC: 5310 — Nuts and Washers
CAGE: 99995 — NATO STOCK NUMBER ASSIGNED BY ANOTHER NATION
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.048 INCHES NOMINAL IN
hole_diameter0.328 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN
overall_diameter0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationS510,BSI MFR REF SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationD-T-D 904 05901 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-437-8693
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 99-1013781 · 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: D-T-D 904 05901 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DIAMETER: 0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: S510,BSI MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: CADMIUM OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIOND-T-D 904 05901 MFR REF SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER0.575 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONS510,BSI MFR REF SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTCADMIUM OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.328 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN
THICKNESS0.048 INCHES NOMINAL IN
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 99-1013781?
99-1013781 is a WASHER,FLAT.
What is the NSN for 99-1013781?
99-1013781 is cataloged in the U.S. Government catalog under NSN 5310-00-437-8693. This indicates validated use in U.S. government and defense supply chains.
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