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Technical Data Sheet
A-A-55587-8 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The HINGE,BUTT is a the manufacturer industrial component. Key specifications include material: UNABLE TO DECODE, body_width: 3.440 INCHES MINIMUM AND 3.560 INCHES MAXIMUM IN, knuckle_type: FRICTION, pin_tip_style: OVAL HEAD, performance_type: NOT RATED, pin_removability: NONREMOVABLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-191-3451, 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
A-A-55587-8
NSN: 5340-01-191-3451
FSC: 5340
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialUNABLE TO DECODE
body_width3.440 INCHES MINIMUM AND 3.560 INCHES MAXIMUM IN
knuckle_typeFRICTION
pin_tip_styleOVAL HEAD
knuckle_quantity5
performance_typeNOT RATED
pin_removabilityNONREMOVABLE
style_designatorBUTT
material_thickness0.118 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
reversible_featureNOT INCLUDED
hinge_mounting_typeFULL SURFACE
mounting_hole_diameter0.182 INCHES NOMINAL IN
NSN5340-01-191-3451
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A-A-55587-8 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
BODY WIDTH: 3.440 INCHES MINIMUM AND 3.560 INCHES MAXIMUM IN
PIN TIP STYLE: OVAL HEAD
HINGE MOUNTING TYPE: FULL SURFACE
PIN CENTER TO BODY EDGE DISTANCE: 1.750 INCHES NOMINAL IN
KNUCKLE QUANTITY: 5
KNUCKLE TYPE: FRICTION
PERFORMANCE TYPE: NOT RATED
REVERSIBLE FEATURE: NOT INCLUDED
TECHNICAL CHARACTERISTICS (FLIS)
BODY WIDTH3.440 INCHES MINIMUM AND 3.560 INCHES MAXIMUM IN
PIN TIP STYLEOVAL HEAD
HINGE MOUNTING TYPEFULL SURFACE
PIN CENTER TO BODY EDGE DISTANCE1.750 INCHES NOMINAL IN
KNUCKLE QUANTITY5
KNUCKLE TYPEFRICTION
PERFORMANCE TYPENOT RATED
REVERSIBLE FEATURENOT INCLUDED
NONDEFINITIVE SPEC/STD DATA2171H TYPE
PIN REMOVABILITYNONREMOVABLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
BHMA-A156.20Upgraded Successor
successor cross-reference
successor
MS27970-26Upgraded Successor
successor cross-reference
successor
FFH116Upgraded Successor
successor cross-reference
successor
10862602Upgraded Successor
successor cross-reference
successor
A-A-55596Upgraded Successor
successor cross-reference
successor
MIL-P-53030AUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-A-55587-8?
A-A-55587-8 is a HINGE,BUTT.
What parts can replace A-A-55587-8?
There are 20 known substitutes for A-A-55587-8: BHMA-A156.20, MS27970-26, FFH116 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-A-55587-8?
A-A-55587-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-191-3451. This indicates validated use in U.S. government and defense supply chains.
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