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TW122 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

TW122: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 4.395 INCHES MINIMUM AND 4.425 INCHES MAXIMUM IN, outside_diameter: 5.281 INCHES MINIMUM AND 5.326 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.125 INCHES NOMINAL IN, external_key_quantity: 19. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-283-0969, 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
TW122
NSN: 5310-00-283-0969
FSC: 5310 — Nuts and Washers
CAGE: 60308 — B & M MACHINE CO INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter4.395 INCHES MINIMUM AND 4.425 INCHES MAXIMUM IN
outside_diameter5.281 INCHES MINIMUM AND 5.326 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.125 INCHES NOMINAL IN
external_key_quantity19
external_prebent_key_width0.390 INCHES MAXIMUM IN
internal_prebent_key_width0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
internal_prebent_key_length0.250 INCHES NOMINAL IN
overall_distance_including_keys6.0625 INCHES MAXIMUM IN
NSN5310-00-283-0969
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: TW122 · 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
•
INTERNAL PREBENT KEY WIDTH: 0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 6.0625 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 5.281 INCHES MINIMUM AND 5.326 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 19
•
INTERNAL PREBENT KEY LENGTH: 0.250 INCHES NOMINAL IN
•
EXTERNAL PREBENT KEY WIDTH: 0.390 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INTERNAL PREBENT KEY WIDTH0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS6.0625 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER5.281 INCHES MINIMUM AND 5.326 INCHES MAXIMUM IN
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY19
INTERNAL PREBENT KEY LENGTH0.250 INCHES NOMINAL IN
EXTERNAL PREBENT KEY WIDTH0.390 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
HOLE DIAMETER4.395 INCHES MINIMUM AND 4.425 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 3
W22Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
52W2220-23Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
127702Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is TW122?
TW122 is a WASHER,KEY.
What parts can replace TW122?
There are 3 known substitutes for TW122: W22, 52W2220-23, 127702. Substitute compatibility should be verified for your specific system.
What is the NSN for TW122?
TW122 is cataloged in the U.S. Government catalog under NSN 5310-00-283-0969. 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.