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51141 ✓ Verified by PartsTable
Bestway · 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 LEVER,BREECHBLOCK,COCKING is a Bestway industrial component. Key specifications include fsc_application_data: NHA ARCRA ASSEMBLY NO 51130, end_item_identification: AIMTEST CAL .50 INBORE TRAINING DEVICE, part_name_assigned_by_controlling_agency: LEVER ASSEMBLY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-251-3199, 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
51141
NSN: 5330-00-251-3199
FSC: 5330
CAGE: 33844 — KLAUER MANUFACTURING COMPANY (USA)
SPECIFICATIONS
fsc_application_dataNHA ARCRA ASSEMBLY NO 51130
end_item_identificationAIMTEST CAL .50 INBORE TRAINING DEVICE
part_name_assigned_by_controlling_agencyLEVER ASSEMBLY
NSN5330-00-251-3199
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 51141 MFR: Bestway ⚠ 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
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
BOLT HOLE QUANTITY: 6
•
APERTURE DIAMETER: 2.281 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 2.875 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.010 INCHES NOMINAL IN
•
MATERIAL: PAPER AND GLUE AND GLYCERIN OVERALL
•
HOLE DIAMETER: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
BOLT HOLE QUANTITY6
APERTURE DIAMETER2.281 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER2.875 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.010 INCHES NOMINAL IN
MATERIALPAPER AND GLUE AND GLYCERIN OVERALL
HOLE DIAMETER0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE DIAMETER3.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONHH-P-96 FED SPEC ALL MATERIAL RESPONSES OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
2546Interchangeable
interchangeable cross-reference
interchangeable
S318Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
QQA200-3Interchangeable
interchangeable cross-reference
interchangeable
SC-B-37648Interchangeable
interchangeable cross-reference
interchangeable
4-193-53Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51141?
51141 is a LEVER,BREECHBLOCK,COCKING manufactured by Bestway.
What parts can replace 51141?
There are 18 known substitutes for 51141: 2546, S318, AMS-QQ-A-200/3 and 15 more. Substitute compatibility should be verified for your specific system.
Is 51141 still available?
51141 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