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99040A316 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

99040A316: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 18.8 OVERALL, thickness: 0.015 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN, hole_diameter: 0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, hardness_rating: 70.0 ROCKWELL B MINIMUM, overall_diameter: 0.1825 INCHES MINIMUM AND 0.1925 INCHES MAXIMUM IN, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-700-1206, 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
99040A316
NSN: 5310-01-700-1206
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL PROPERTY CLASS 18.8 OVERALL
thickness0.015 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN
hole_diameter0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
hardness_rating70.0 ROCKWELL B MINIMUM
overall_diameter0.1825 INCHES MINIMUM AND 0.1925 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification2360-016420789
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agency18-8 STAINLESS STEEL TIGHT-FIT RING SHIMS
NSN5310-01-700-1206
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 99040A316 · 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
•
OVERALL DIAMETER: 0.1825 INCHES MINIMUM AND 0.1925 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 ROCKWELL B MINIMUM
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL PROPERTY CLASS 18.8 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.1825 INCHES MINIMUM AND 0.1925 INCHES MAXIMUM IN
HARDNESS RATING70.0 ROCKWELL B MINIMUM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCY18-8 STAINLESS STEEL TIGHT-FIT RING SHIMS
END ITEM IDENTIFICATION2360-016420789
MATERIALSTEEL PROPERTY CLASS 18.8 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
THICKNESS0.015 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
4299876Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 99040A316?
99040A316 is a WASHER,FLAT.
What parts can replace 99040A316?
There is 1 known substitute for 99040A316: 4299876. Substitute compatibility should be verified for your specific system.
What is the NSN for 99040A316?
99040A316 is cataloged in the U.S. Government catalog under NSN 5310-01-700-1206. 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.