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PartsTable / COMPONENT / BS51338
BS51338 ✓ 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 BUTTON,PLUG is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, head_height: 0.062 INCHES NOMINAL IN, overall_height: 0.344 INCHES NOMINAL IN, style_designator: STANDARD, surface_treatment: PAINT, head_outside_diameter: 0.625 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-270-8552, 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
BS51338
NSN: 5340-00-270-8552
FSC: 5340
CAGE: 61864 — TRW ASSEMBLIES AND FASTENERS GROUP (USA)
SPECIFICATIONS
materialCOPPER ALLOY
head_height0.062 INCHES NOMINAL IN
overall_height0.344 INCHES NOMINAL IN
prong_quantity6
style_designatorSTANDARD
surface_treatmentPAINT
head_outside_diameter0.625 INCHES NOMINAL IN
prong_outside_diameter0.531 INCHES NOMINAL IN
hole_accommodation_diameter0.500 INCHES NOMINAL IN
material_accommodated_thickness0.093 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
NSN5340-00-270-8552
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BS51338 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
•
HEAD HEIGHT: 0.062 INCHES NOMINAL IN
•
PRONG QUANTITY: 6
•
SURFACE TREATMENT: PAINT
•
PRONG OUTSIDE DIAMETER: 0.531 INCHES NOMINAL IN
•
MATERIAL ACCOMMODATED THICKNESS: 0.093 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY
•
HEAD OUTSIDE DIAMETER: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.062 INCHES NOMINAL IN
OVERALL HEIGHT0.344 INCHES NOMINAL IN
PRONG QUANTITY6
SURFACE TREATMENTPAINT
PRONG OUTSIDE DIAMETER0.531 INCHES NOMINAL IN
MATERIAL ACCOMMODATED THICKNESS0.093 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY
HEAD OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
HOLE ACCOMMODATION DIAMETER0.500 INCHES NOMINAL IN
STYLE DESIGNATORSTANDARD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
51320Interchangeable
interchangeable cross-reference
interchangeable
A-020SR822-60Interchangeable
interchangeable cross-reference
interchangeable
GS570EM020Interchangeable
interchangeable cross-reference
interchangeable
MS29513-020Interchangeable
interchangeable cross-reference
interchangeable
62344-504Interchangeable
interchangeable cross-reference
interchangeable
51118Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BS51338?
BS51338 is a BUTTON,PLUG.
What parts can replace BS51338?
There are 16 known substitutes for BS51338: 51320, A-020SR822-60, GS570EM020 and 13 more. Substitute compatibility should be verified for your specific system.
Is BS51338 still available?
BS51338 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026