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311981-1 — GROMMET,NONMETALLIC

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

311981-1: GROMMET,NONMETALLIC.

The GROMMET,NONMETALLIC is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC OVERALL, hole_diameter: 0.937 INCHES NOMINAL IN, overall_height: 0.125 INCHES NOMINAL IN, end_item_identification: AN/ALR-62(V) PECULIAR, large_flange_outside_diameter: 1.190 INCHES NOMINAL IN, material_document_and_classification: ZZ-R-765 CLASS 2A MIL SPEC ALL MATERIAL RESPONSES OVERALL A. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-056-9470, 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
311981-1
NSN: 5325-01-056-9470
FSC: 5325 — Fastening Devices
CAGE: 26916 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP DIV MULTIPLE (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
hole_diameter0.937 INCHES NOMINAL IN
overall_height0.125 INCHES NOMINAL IN
end_item_identificationAN/ALR-62(V) PECULIAR
large_flange_outside_diameter1.190 INCHES NOMINAL IN
material_document_and_classificationZZ-R-765 CLASS 2A MIL SPEC ALL MATERIAL RESPONSES OVERALL A
NSN5325-01-056-9470
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 311981-1 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765 CLASS 2A MIL SPEC ALL MATERIAL RESPONSES OVERALL A
•
LARGE FLANGE OUTSIDE DIAMETER: 1.190 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
HOLE DIAMETER: 0.937 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765 CLASS 2A MIL SPEC ALL MATERIAL RESPONSES OVERALL A
LARGE FLANGE OUTSIDE DIAMETER1.190 INCHES NOMINAL IN
END ITEM IDENTIFICATIONAN/ALR-62(V) PECULIAR
MATERIALRUBBER SYNTHETIC OVERALL
HOLE DIAMETER0.937 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 311981-1?
311981-1 is a GROMMET,NONMETALLIC.
What is the NSN for 311981-1?
311981-1 is cataloged in the U.S. Government catalog under NSN 5325-01-056-9470. 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.