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Technical Data Sheet
PartsTable / COMPONENT / 4M294-16
4M294-16 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 1.020 INCHES MINIMUM AND 1.100 INCHES MAXIMUM IN, overall_height: 0.480 INCHES NOMINAL IN, outside_diameter: 1.280 INCHES NOMINAL IN, style_designator: SPLIT DOUBLE HELICAL RING, surface_treatment: TIN OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-206-3483, 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
4M294-16
NSN: 5310-01-206-3483
FSC: 5310
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter1.020 INCHES MINIMUM AND 1.100 INCHES MAXIMUM IN
overall_height0.480 INCHES NOMINAL IN
outside_diameter1.280 INCHES NOMINAL IN
style_designatorSPLIT DOUBLE HELICAL RING
surface_treatmentTIN OVERALL
surface_treatment_document_and_classificationASTM B545 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-206-3483
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4M294-16 · 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: SPLIT DOUBLE HELICAL RING
•
MATERIAL: COPPER ALLOY OVERALL
•
SURFACE TREATMENT: TIN OVERALL
•
HOLE DIAMETER: 1.020 INCHES MINIMUM AND 1.100 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B545 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.280 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSPLIT DOUBLE HELICAL RING
MATERIALCOPPER ALLOY OVERALL
SURFACE TREATMENTTIN OVERALL
HOLE DIAMETER1.020 INCHES MINIMUM AND 1.100 INCHES MAXIMUM IN
OVERALL HEIGHT0.480 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B545 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
OUTSIDE DIAMETER1.280 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
2742A1-118Interchangeable
interchangeable cross-reference
interchangeable
445-12Interchangeable
interchangeable cross-reference
interchangeable
3496843Interchangeable
interchangeable cross-reference
interchangeable
47638Interchangeable
interchangeable cross-reference
interchangeable
GS837GW9Interchangeable
interchangeable cross-reference
interchangeable
10800GN3-9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4M294-16?
4M294-16 is a WASHER,LOCK.
What parts can replace 4M294-16?
There are 9 known substitutes for 4M294-16: 2742A1-118, 445-12, 3496843 and 6 more. Substitute compatibility should be verified for your specific system.
Is 4M294-16 still available?
4M294-16 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026