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4M264-1 — WASHER,FINISHING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4M264-1: WASHER,FINISHING.

The WASHER,FINISHING is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY OVERALL, recess_angle: 100.0 DEGREES NOMINAL, hole_diameter: 0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN, overall_height: 0.181 INCHES NOMINAL IN, recess_diameter: 0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN, outside_diameter: 0.676 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-129-7619, 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
4M264-1
NSN: 5310-01-129-7619
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialTITANIUM ALLOY OVERALL
recess_angle100.0 DEGREES NOMINAL
hole_diameter0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
overall_height0.181 INCHES NOMINAL IN
recess_diameter0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
outside_diameter0.676 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN
style_designatorFINISHING
material_thickness0.020 INCHES NOMINAL IN
material_document_and_classificationMIL-T-9047,COMP 6-6A1-4V MIL SPEC SINGLE MATERIAL RESPONSE OVERALL V
NSN5310-01-129-7619
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4M264-1 · 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
•
STYLE DESIGNATOR: FINISHING
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-T-9047,COMP 6-6A1-4V MIL SPEC SINGLE MATERIAL RESPONSE OVERALL V
•
OUTSIDE DIAMETER: 0.676 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.020 INCHES NOMINAL IN
•
RECESS DIAMETER: 0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
•
MATERIAL: TITANIUM ALLOY OVERALL
•
HOLE DIAMETER: 0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.181 INCHES NOMINAL IN
STYLE DESIGNATORFINISHING
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-T-9047,COMP 6-6A1-4V MIL SPEC SINGLE MATERIAL RESPONSE OVERALL V
OUTSIDE DIAMETER0.676 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN
MATERIAL THICKNESS0.020 INCHES NOMINAL IN
RECESS DIAMETER0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
MATERIALTITANIUM ALLOY OVERALL
HOLE DIAMETER0.250 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
RECESS ANGLE100.0 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: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4M264-1?
4M264-1 is a WASHER,FINISHING.
What is the NSN for 4M264-1?
4M264-1 is cataloged in the U.S. Government catalog under NSN 5310-01-129-7619. 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.