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A51B1255-11 — HINGE,ACCESS DOOR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A51B1255-11: HINGE,ACCESS DOOR.

The HINGE,ACCESS DOOR is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, pin_diameter: 0.173 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN, overall_length: 6.810 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.070 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-245-2074, 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
A51B1255-11
NSN: 5340-00-245-2074
FSC: 5340 — Hardware, Commercial
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
pin_diameter0.173 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
overall_length6.810 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
material_thickness0.070 INCHES NOMINAL IN
NSN5340-00-245-2074
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A51B1255-11 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
•
PIN DIAMETER: 0.173 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.070 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
PIN DIAMETER0.173 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
OVERALL LENGTH6.810 INCHES NOMINAL IN
MATERIAL THICKNESS0.070 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING 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 1
A51B12552-11Reference 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 A51B1255-11?
A51B1255-11 is a HINGE,ACCESS DOOR.
What parts can replace A51B1255-11?
There is 1 known substitute for A51B1255-11: A51B12552-11. Substitute compatibility should be verified for your specific system.
What is the NSN for A51B1255-11?
A51B1255-11 is cataloged in the U.S. Government catalog under NSN 5340-00-245-2074. 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.