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4804854-3 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4804854-3: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include length: 1.250 INCHES NOMINAL IN, material: STEEL OVERALL, thickness: 0.060 INCHES NOMINAL IN, hole_diameter: 0.40625 INCHES NOMINAL IN, special_features: OCTAGONAL SHAPE SURROUNDS HOLE WITH NOTATION THAT CORNERS ARE BENT UP ON ASSEMBLY;HOLE IS OFF CENTER, width_across_flats: 0.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-618-5922, 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
4804854-3
NSN: 5310-01-618-5922
FSC: 5310 — Nuts and Washers
CAGE: 0BR59 — SIEMENS GOVERNMENT TECHNOLOGIES, INC. DBA SGT DRESSER-RAND DIV SGT DRESSER-RAND (USA)
SPECIFICATIONS
length1.250 INCHES NOMINAL IN
materialSTEEL OVERALL
thickness0.060 INCHES NOMINAL IN
hole_diameter0.40625 INCHES NOMINAL IN
special_featuresOCTAGONAL SHAPE SURROUNDS HOLE WITH NOTATION THAT CORNERS ARE BENT UP ON ASSEMBLY;HOLE IS OFF CENTER
width_across_flats0.875 INCHES NOMINAL IN
peripheral_shape_styleRECTANGULAR
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM A569 ASSN STD SINGLE MATERIAL RESPONSE OR D-R SPEC M-8774 MFR REF SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyLOCKWASHER
NSN5310-01-618-5922
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4804854-3 · 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: 0.875 INCHES NOMINAL IN
•
LENGTH: 1.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A569 ASSN STD SINGLE MATERIAL RESPONSE OR D-R SPEC M-8774 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: RECTANGULAR
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.875 INCHES NOMINAL IN
LENGTH1.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A569 ASSN STD SINGLE MATERIAL RESPONSE OR D-R SPEC M-8774 MFR REF SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SPECIAL FEATURESOCTAGONAL SHAPE SURROUNDS HOLE WITH NOTATION THAT CORNERS ARE BENT UP ON ASSEMBLY;HOLE IS OFF CENTER
PERIPHERAL SHAPE STYLERECTANGULAR
PART NAME ASSIGNED BY CONTROLLING AGENCYLOCKWASHER
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.40625 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
4804854PT3Reference document
Same NSN cross-reference
Reference document — Secondary reference
K-4804854Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 4804854-3?
4804854-3 is a WASHER,FLAT.
What parts can replace 4804854-3?
There are 2 known substitutes for 4804854-3: 4804854PT3, K-4804854. Substitute compatibility should be verified for your specific system.
What is the NSN for 4804854-3?
4804854-3 is cataloged in the U.S. Government catalog under NSN 5310-01-618-5922. 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.