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77344079 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

77344079: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include recess_angle: 86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM, recess_depth: 0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN, hole_diameter: 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN, heat_treatment: AS FABRICATED, recess_diameter: 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN, style_designator: RECESSED. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-116-4307, 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
77344079
NSN: 5310-00-116-4307
FSC: 5310 — Nuts and Washers
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
recess_angle86.0 DEGREES MINIMUM AND 94.0 DEGREES MAXIMUM
recess_depth0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
hole_diameter0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
heat_treatmentAS FABRICATED
recess_diameter0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentCADMIUM OVERALL
material_thickness0.045 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
material_document_and_classificationSTK540,FSCM 03014 MFR REF SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
surface_treatment_document_and_classificationPF12 0.0003 IN.MIN,0.0006 IN.MAX,FSCM 21883 MFR REF SINGLE TREATMENT RESPONSE OVERALL IN
NSN5310-00-116-4307
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 77344079 · 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: PF12 0.0003 IN.MIN,0.0006 IN.MAX,FSCM 21883 MFR REF SINGLE TREATMENT RESPONSE OVERALL IN
•
HEAT TREATMENT: AS FABRICATED
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: STK540,FSCM 03014 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
RECESS DEPTH: 0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.045 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
RECESS DIAMETER: 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONPF12 0.0003 IN.MIN,0.0006 IN.MAX,FSCM 21883 MFR REF SINGLE TREATMENT RESPONSE OVERALL IN
HEAT TREATMENTAS FABRICATED
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONSTK540,FSCM 03014 MFR REF SINGLE MATERIAL RESPONSE OVERALL
RECESS DEPTH0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
MATERIAL THICKNESS0.045 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
RECESS DIAMETER0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
HOLE DIAMETER0.195 INCHES MINIMUM AND 0.205 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 77344079?
77344079 is a WASHER,RECESSED.
What is the NSN for 77344079?
77344079 is cataloged in the U.S. Government catalog under NSN 5310-00-116-4307. 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.