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560021 — PAD,BACK,PARACHUTE HARNESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

560021: PAD,BACK,PARACHUTE HARNESS.

The PAD,BACK,PARACHUTE HARNESS is a the manufacturer industrial component. Key specifications include width: 13.250 INCHES MINIMUM AND 14.000 INCHES MAXIMUM IN, length: 1.400 FEET NOMINAL FT, material: PLASTIC POLYAMIDE NYLON, pad_thickness: 1.000 INCHES NOMINAL IN, special_features: PAD MATERIAL:SPONGE RUBBER 1.000 IN.THK IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-331-9556, 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
560021
NSN: 5310-00-331-9556
NIINs: 003319556, 005557531
FSC: 5310 — Nuts and Washers
CAGE: 30715 — SABRELINER CORP (USA)
SPECIFICATIONS
width13.250 INCHES MINIMUM AND 14.000 INCHES MAXIMUM IN
length1.400 FEET NOMINAL FT
materialPLASTIC POLYAMIDE NYLON
pad_thickness1.000 INCHES NOMINAL IN
special_featuresPAD MATERIAL:SPONGE RUBBER 1.000 IN.THK IN
NSN5310-00-331-9556
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 560021 · 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: AMS2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER HEIGHT: 0.090 INCHES NOMINAL IN
•
HARDNESS RATING: 46.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
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STYLE DESIGNATOR: SHOULDERED AND RECESSED
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MATERIAL DOCUMENT AND CLASSIFICATION: AMS6448 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.765 INCHES MINIMUM AND 1.775 INCHES MAXIMUM IN
•
RECESS DEPTH: 0.080 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.150 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SHOULDER HEIGHT0.090 INCHES NOMINAL IN
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSHOULDERED AND RECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS6448 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.765 INCHES MINIMUM AND 1.775 INCHES MAXIMUM IN
RECESS DEPTH0.080 INCHES NOMINAL IN
MATERIAL THICKNESS0.150 INCHES NOMINAL IN
SHOULDER DIAMETER0.670 INCHES NOMINAL IN
RECESS DIAMETER1.650 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 560021?
560021 is a PAD,BACK,PARACHUTE HARNESS.
What is the NSN for 560021?
560021 is cataloged in the U.S. Government catalog under NSN 5310-00-331-9556. This indicates validated use in U.S. government and defense supply chains.
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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.