PartsTable
Technical Data Sheet
Download PDF

845-6556204-1 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

845-6556204-1: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include length: 2.000 INCHES NOMINAL IN, material: NICKEL ALLOY 400 OVERALL, thickness: 0.031 INCHES NOMINAL IN, hole_diameter: 1.210 INCHES NOMINAL IN, width_across_flats: 1.610 INCHES NOMINAL IN, peripheral_shape_style: RECTANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-353-2058, 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
845-6556204-1
NSN: 5310-01-353-2058
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
length2.000 INCHES NOMINAL IN
materialNICKEL ALLOY 400 OVERALL
thickness0.031 INCHES NOMINAL IN
hole_diameter1.210 INCHES NOMINAL IN
width_across_flats1.610 INCHES NOMINAL IN
peripheral_shape_styleRECTANGULAR
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM-B-127 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-353-2058
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 845-6556204-1 · 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
•
WIDTH ACROSS FLATS: 1.610 INCHES NOMINAL IN
•
LENGTH: 2.000 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-B-127 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: RECTANGULAR
•
MATERIAL: NICKEL ALLOY 400 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 1.210 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.610 INCHES NOMINAL IN
LENGTH2.000 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-B-127 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLERECTANGULAR
MATERIALNICKEL ALLOY 400 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.210 INCHES NOMINAL IN
THICKNESS0.031 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: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 845-6556204-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 845-6556204-1?
845-6556204-1 is a WASHER,FLAT.
What is the NSN for 845-6556204-1?
845-6556204-1 is cataloged in the U.S. Government catalog under NSN 5310-01-353-2058. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 845-6556204-1

✓ 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.