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TSF21X50WSPFP.049 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

TSF21X50WSPFP.049: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.049 INCHES NOMINAL IN, hole_diameter: 0.221 INCHES NOMINAL IN, overall_diameter: 0.505 INCHES NOMINAL IN, surface_treatment: PHOSPHATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-599-5353, 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
TSF21X50WSPFP.049
NSN: 5310-01-599-5353
FSC: 5310 — Nuts and Washers
CAGE: 0CYX7 — TRANSPEC FASTENERS, INC. DBA TRANSPEC FASTENERS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.049 INCHES NOMINAL IN
hole_diameter0.221 INCHES NOMINAL IN
overall_diameter0.505 INCHES NOMINAL IN
surface_treatmentPHOSPHATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification1005-01-586-5702; MOUNT, TRIPOD, MACHINE GUN
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyFLAT WASHER-STEEL-PHOSPHATE COATED
NSN5310-01-599-5353
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: TSF21X50WSPFP.049 · 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
•
OVERALL DIAMETER: 0.505 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.505 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTPHOSPHATE OVERALL
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYFLAT WASHER-STEEL-PHOSPHATE COATED
END ITEM IDENTIFICATION1005-01-586-5702; MOUNT, TRIPOD, MACHINE GUN
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.221 INCHES NOMINAL IN
THICKNESS0.049 INCHES NOMINAL 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 1
TSF21X50WSPFP.04Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is TSF21X50WSPFP.049?
TSF21X50WSPFP.049 is a WASHER,FLAT.
What parts can replace TSF21X50WSPFP.049?
There is 1 known substitute for TSF21X50WSPFP.049: TSF21X50WSPFP.04. Substitute compatibility should be verified for your specific system.
What is the NSN for TSF21X50WSPFP.049?
TSF21X50WSPFP.049 is cataloged in the U.S. Government catalog under NSN 5310-01-599-5353. 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.