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M-5494 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

M-5494: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 0.188 INCHES NOMINAL IN, recess_diameter: 0.375 INCHES NOMINAL IN, outside_diameter: 0.625 INCHES NOMINAL IN, style_designator: RECESSED, surface_treatment: ZINC OR CADMIUM AND CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-185-4675, 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
M-5494
NSN: 5310-01-185-4675
FSC: 5310 — Nuts and Washers
CAGE: 19554 — EDWARDS O M CO INC THE (USA)
SPECIFICATIONS
recess_angle90.0 DEGREES NOMINAL
hole_diameter0.188 INCHES NOMINAL IN
recess_diameter0.375 INCHES NOMINAL IN
outside_diameter0.625 INCHES NOMINAL IN
style_designatorRECESSED
surface_treatmentZINC OR CADMIUM AND CHROMATE OVERALL
material_thickness0.094 INCHES NOMINAL IN
surface_treatment_document_and_classificationASTM A108 ASSN STD 1ST TREATMENT RESPONSE OR QQ-P-416 TYPE 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
NSN5310-01-185-4675
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M-5494 · 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 TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A108 ASSN STD 1ST TREATMENT RESPONSE OR QQ-P-416 TYPE 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: RECESSED
•
OUTSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.094 INCHES NOMINAL IN
•
RECESS DIAMETER: 0.375 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OR CADMIUM AND CHROMATE OVERALL
•
MATERIAL: STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1115 OR STEEL COMP 1116 OR STEEL COMP 1117 OR STEEL COMP 1118 OR STEEL COMP 1119 OR STEEL COMP 1120 OVERALL
•
HOLE DIAMETER: 0.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A108 ASSN STD 1ST TREATMENT RESPONSE OR QQ-P-416 TYPE 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
STYLE DESIGNATORRECESSED
OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
MATERIAL THICKNESS0.094 INCHES NOMINAL IN
RECESS DIAMETER0.375 INCHES NOMINAL IN
SURFACE TREATMENTZINC OR CADMIUM AND CHROMATE OVERALL
MATERIALSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1211 OR STEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1115 OR STEEL COMP 1116 OR STEEL COMP 1117 OR STEEL COMP 1118 OR STEEL COMP 1119 OR STEEL COMP 1120 OVERALL
HOLE DIAMETER0.188 INCHES NOMINAL IN
RECESS ANGLE90.0 DEGREES NOMINAL
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M-5494?
M-5494 is a WASHER,RECESSED.
What is the NSN for M-5494?
M-5494 is cataloged in the U.S. Government catalog under NSN 5310-01-185-4675. 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.