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0321-3 — NUT,PLAIN,WING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

0321-3: NUT,PLAIN,WING.

The NUT,PLAIN,WING is a the manufacturer industrial component. Key specifications include special_features: UNIT WEIGHT: 0.50LBS LBS, thread_direction: RIGHT-HAND, part_name_assigned_by_controlling_agency: NUT, 5/16" WING. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-382-7684, 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
0321-3
NSN: 5330-01-382-7684
NIINs: 013827684, 016449472
FSC: 5330 — Packing and Gasket Materials
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
special_featuresUNIT WEIGHT: 0.50LBS LBS
thread_directionRIGHT-HAND
part_name_assigned_by_controlling_agencyNUT, 5/16" WING
NSN5330-01-382-7684
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 0321-3 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OUTSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR TOP RING
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND C SIZE
•
INSIDE DIAMETER: 0.610 INCHES NOMINAL IN
•
HEIGHT: 1.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR TOP RING
CROSS-SECTIONAL SHAPE STYLEANGLE BOTTOM RING
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR INTERMEDIATE RING
NONDEFINITIVE SPEC/STD DATA2 TYPE AND C SIZE
INSIDE DIAMETER0.610 INCHES NOMINAL IN
HEIGHT1.125 INCHES NOMINAL IN
SPECIAL FEATURESINTERMEDIATE RINGS MAY BE OF ONE CONTINUOUS LENGTH; DIFFERENTIATED BY NON-ASBESTOS MATERIAL
ENVIRONMENTAL ATTRIBUTE CODEASBESTOS ALTERNATIVE PRODUCTS
MATERIALGRAPHITE AND PLASTIC POLYTETRAFLUOROETHYLENE INTERMEDIATE RING
SUBSTITUTES & CROSS-REFERENCES 4
MIL-P-16685Reference document
Same NSN cross-reference
Reference document — Secondary reference
M16685TYPE2SIZECReference document
Same NSN cross-reference
Reference document — Secondary reference
M16685-2IICSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MIL-DTL-16685Reference document
Same NSN cross-reference
Reference document — Identification 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 0321-3?
0321-3 is a NUT,PLAIN,WING.
What parts can replace 0321-3?
There are 4 known substitutes for 0321-3: MIL-P-16685, M16685TYPE2SIZEC, M16685-2IIC and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 0321-3?
0321-3 is cataloged in the U.S. Government catalog under NSN 5330-01-382-7684. 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.