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1178A31 — BOLT,BARREL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1178A31: BOLT,BARREL.

The BOLT,BARREL is a the manufacturer industrial component. Key specifications include width: 2.125 INCHES NOMINAL OVERALL IN, length: 3.125 INCHES NOMINAL OVERALL IN, diameter: 0.75 INCHES NOMINAL BOLT IN, material: STEEL OVERALL, special_features: BOLT CAN BE ROTATED 180 DEGREES FOR PUSH AND PULL DOORS, surface_treatment: ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-608-6043, 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
1178A31
NSN: 5340-01-608-6043
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
width2.125 INCHES NOMINAL OVERALL IN
length3.125 INCHES NOMINAL OVERALL IN
diameter0.75 INCHES NOMINAL BOLT IN
materialSTEEL OVERALL
special_featuresBOLT CAN BE ROTATED 180 DEGREES FOR PUSH AND PULL DOORS
surface_treatmentZINC OVERALL
end_item_identification2330015807654
part_name_assigned_by_controlling_agencyBOLT,SPRING LOADED
NSN5340-01-608-6043
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1178A31 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
•
LENGTH: 3.125 INCHES NOMINAL OVERALL IN
•
DIAMETER: 0.75 INCHES NOMINAL BOLT IN
•
SURFACE TREATMENT: ZINC OVERALL
•
WIDTH: 2.125 INCHES NOMINAL OVERALL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
LENGTH3.125 INCHES NOMINAL OVERALL IN
DIAMETER0.75 INCHES NOMINAL BOLT IN
SPECIAL FEATURESBOLT CAN BE ROTATED 180 DEGREES FOR PUSH AND PULL DOORS
SURFACE TREATMENTZINC OVERALL
WIDTH2.125 INCHES NOMINAL OVERALL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT,SPRING LOADED
END ITEM IDENTIFICATION2330015807654
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
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 1178A31?
1178A31 is a BOLT,BARREL.
What is the NSN for 1178A31?
1178A31 is cataloged in the U.S. Government catalog under NSN 5340-01-608-6043. 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.