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053 109 — O-RING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

053 109: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: PLASTIC OVERALL, hole_diameter: 0.312 INCHES NOMINAL IN, flange_thickness: 0.120 INCHES NOMINAL IN, groove_outside_diameter: 0.437 INCHES NOMINAL IN, grommet_construction_type: SOLID. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-077-3218, 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
053 109
NSN: 5325-01-077-3218
NIINs: 010773218, 013549619
FSC: 5325 — Fastening Devices
CAGE: 06889 — BIG JOE MFG CO (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
hole_diameter0.312 INCHES NOMINAL IN
flange_thickness0.120 INCHES NOMINAL IN
groove_outside_diameter0.437 INCHES NOMINAL IN
grommet_construction_typeSOLID
NSN5325-01-077-3218
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 053 109 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLANGE THICKNESS: 0.120 INCHES NOMINAL IN
•
GROOVE OUTSIDE DIAMETER: 0.437 INCHES NOMINAL IN
•
GROMMET CONSTRUCTION TYPE: SOLID
•
MATERIAL: PLASTIC OVERALL
•
HOLE DIAMETER: 0.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE THICKNESS0.120 INCHES NOMINAL IN
GROOVE OUTSIDE DIAMETER0.437 INCHES NOMINAL IN
GROMMET CONSTRUCTION TYPESOLID
MATERIALPLASTIC OVERALL
HOLE DIAMETER0.312 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
WS1-G-5CReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 053 109?
053 109 is a O-RING.
What parts can replace 053 109?
There is 1 known substitute for 053 109: WS1-G-5C. Substitute compatibility should be verified for your specific system.
What is the NSN for 053 109?
053 109 is cataloged in the U.S. Government catalog under NSN 5325-01-077-3218. 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.