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S8157N40-010 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

S8157N40-010: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 321 OR STEEL COMP 316 OR STEEL COMP 302 OR STEEL COMP 301 OR STEEL COMP 303 OVERALL, thickness: 0.010 INCHES NOMINAL IN, hole_diameter: 0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN, surface_finish: 125.0 MICROINCHES ALL SURFACES, overall_diameter: 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-484-5976, 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
S8157N40-010
NSN: 5310-01-484-5976
FSC: 5310 — Nuts and Washers
CAGE: 70210 — HONEYWELL INTERNATIONAL INC. DIV AEROSPACE - TORRANCE (USA)
SPECIFICATIONS
materialSTEEL COMP 321 OR STEEL COMP 316 OR STEEL COMP 302 OR STEEL COMP 301 OR STEEL COMP 303 OVERALL
thickness0.010 INCHES NOMINAL IN
hole_diameter0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
surface_finish125.0 MICROINCHES ALL SURFACES
overall_diameter0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationAIRCRAFT,GALAXY C-5
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationMIL-S-6721,TYPE 321 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,TYPE 301,TYPE 302,TYPE 316 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-7720,TYPE 303 MIL SPEC 3RD MATERIAL RESPONSE OVERALL
NSN5310-01-484-5976
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: S8157N40-010 · 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 FINISH: 125.0 MICROINCHES ALL SURFACES
•
OVERALL DIAMETER: 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6721,TYPE 321 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,TYPE 301,TYPE 302,TYPE 316 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-7720,TYPE 303 MIL SPEC 3RD MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 321 OR STEEL COMP 316 OR STEEL COMP 302 OR STEEL COMP 301 OR STEEL COMP 303 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES ALL SURFACES
OVERALL DIAMETER0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6721,TYPE 321 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,TYPE 301,TYPE 302,TYPE 316 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-7720,TYPE 303 MIL SPEC 3RD MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
END ITEM IDENTIFICATIONAIRCRAFT,GALAXY C-5
MATERIALSTEEL COMP 321 OR STEEL COMP 316 OR STEEL COMP 302 OR STEEL COMP 301 OR STEEL COMP 303 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.318 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
THICKNESS0.010 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 1
S8157Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 S8157N40-010?
S8157N40-010 is a WASHER,FLAT.
What parts can replace S8157N40-010?
There is 1 known substitute for S8157N40-010: S8157. Substitute compatibility should be verified for your specific system.
What is the NSN for S8157N40-010?
S8157N40-010 is cataloged in the U.S. Government catalog under NSN 5310-01-484-5976. 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.