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549299 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

549299: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, recess_angle: 45.0 DEGREES NOMINAL, recess_depth: 0.031 INCHES NOMINAL IN, hole_diameter: 0.671 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN, surface_finish: 32.0 MICROINCHES TOP, recess_diameter: 0.733 INCHES MINIMUM AND 0.737 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-844-2895, 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
549299
NSN: 5310-00-844-2895
FSC: 5310 — Nuts and Washers
CAGE: 70210 — HONEYWELL INTERNATIONAL INC. DIV AEROSPACE - TORRANCE (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
recess_angle45.0 DEGREES NOMINAL
recess_depth0.031 INCHES NOMINAL IN
hole_diameter0.671 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES TOP
recess_diameter0.733 INCHES MINIMUM AND 0.737 INCHES MAXIMUM IN
outside_diameter0.830 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN
style_designatorRECESSED
material_thickness0.049 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-844-2895
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 549299 · 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 FINISH: 32.0 MICROINCHES BOTTOM
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.830 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN
•
RECESS DEPTH: 0.031 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.049 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN
•
RECESS DIAMETER: 0.733 INCHES MINIMUM AND 0.737 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES BOTTOM
SURFACE FINISH32.0 MICROINCHES TOP
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.830 INCHES MINIMUM AND 0.850 INCHES MAXIMUM IN
RECESS DEPTH0.031 INCHES NOMINAL IN
MATERIAL THICKNESS0.049 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN
RECESS DIAMETER0.733 INCHES MINIMUM AND 0.737 INCHES MAXIMUM IN
MATERIALSTEEL COMP 4130 OVERALL
HOLE DIAMETER0.671 INCHES MINIMUM AND 0.675 INCHES MAXIMUM 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 549299?
549299 is a WASHER,RECESSED.
What is the NSN for 549299?
549299 is cataloged in the U.S. Government catalog under NSN 5310-00-844-2895. 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.