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028-06955-000 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

028-06955-000: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include length: 0.500 INCHES NOMINAL IN, material: RUBBER NEOPRENE OVERALL, special_features: NHA; MARINEPAK, 300 TON DUPLEX R-114 WATER COOLING SYSTEM, width_across_flats: 3.625 INCHES NOMINAL IN, peripheral_shape_style: RECTANGULAR, end_item_identification: SSN-688 CLASS SUBMARINES. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-554-8707, 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
028-06955-000
NSN: 5310-01-554-8707
FSC: 5310 — Nuts and Washers
CAGE: 66935 — JOHNSON CONTROLS NAVY SYSTEMS, LLC (USA)
SPECIFICATIONS
length0.500 INCHES NOMINAL IN
materialRUBBER NEOPRENE OVERALL
special_featuresNHA; MARINEPAK, 300 TON DUPLEX R-114 WATER COOLING SYSTEM
width_across_flats3.625 INCHES NOMINAL IN
peripheral_shape_styleRECTANGULAR
end_item_identificationSSN-688 CLASS SUBMARINES
NSN5310-01-554-8707
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 028-06955-000 · 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
•
WIDTH ACROSS FLATS: 3.625 INCHES NOMINAL IN
•
LENGTH: 0.500 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: RECTANGULAR
•
MATERIAL: RUBBER NEOPRENE OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS3.625 INCHES NOMINAL IN
LENGTH0.500 INCHES NOMINAL IN
SPECIAL FEATURESNHA; MARINEPAK, 300 TON DUPLEX R-114 WATER COOLING SYSTEM
PERIPHERAL SHAPE STYLERECTANGULAR
END ITEM IDENTIFICATIONSSN-688 CLASS SUBMARINES
MATERIALRUBBER NEOPRENE OVERALL
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
477-15979-000 ITEM 60Reference document
Same NSN cross-reference
Reference document — Secondary 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 028-06955-000?
028-06955-000 is a WASHER,FLAT.
What parts can replace 028-06955-000?
There is 1 known substitute for 028-06955-000: 477-15979-000 ITEM 60. Substitute compatibility should be verified for your specific system.
What is the NSN for 028-06955-000?
028-06955-000 is cataloged in the U.S. Government catalog under NSN 5310-01-554-8707. 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.