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Technical Data Sheet
PartsTable / COMPONENT / B1031-13
B1031-13 ✓ 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 HANDLE,BAIL is a the manufacturer industrial component. Key specifications include thread_class: 2A A, inside_length: 3.625 INCHES NOMINAL IN, stock_diameter: 0.375 INCHES NOMINAL IN, mounting_method: THREADED STUD(S), special_features: TWO 3/8-24 NUTS FURNISHED, style_designator: EYE HOOK. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-020-8499, 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
B1031-13
NSN: 5340-00-020-8499
FSC: 5340
CAGE: 81312 — WINCHESTER INTERCONNECT CORPORATION DBA WINCHESTER INTERCONNECT DIV WINCHESTER INTERCONNECT (USA)
SPECIFICATIONS
thread_class2A A
inside_length3.625 INCHES NOMINAL IN
stock_diameter0.375 INCHES NOMINAL IN
mounting_methodTHREADED STUD(S)
special_featuresTWO 3/8-24 NUTS FURNISHED
style_designatorEYE HOOK
surface_treatmentNICKEL HANDLE
nominal_thread_size0.375 INCHES IN
mounting_facility_length0.625 INCHES NOMINAL IN
thread_series_designatorUNF
mounting_facility_quantity2
center_to_center_distance_between_mounting_facilities_parallel_to_length4.000 INCHES NOMINAL IN
NSN5340-00-020-8499
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B1031-13 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
•
MOUNTING FACILITY QUANTITY: 2
•
SURFACE TREATMENT: NICKEL HANDLE
•
STYLE DESIGNATOR: EYE HOOK
•
MOUNTING FACILITY LENGTH: 0.625 INCHES NOMINAL IN
•
INSIDE LENGTH: 3.625 INCHES NOMINAL IN
•
MOUNTING METHOD: THREADED STUD(S)
•
STOCK DIAMETER: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING FACILITY QUANTITY2
SURFACE TREATMENTNICKEL HANDLE
STYLE DESIGNATOREYE HOOK
MOUNTING FACILITY LENGTH0.625 INCHES NOMINAL IN
SPECIAL FEATURESTWO 3/8-24 NUTS FURNISHED
INSIDE LENGTH3.625 INCHES NOMINAL IN
MOUNTING METHODTHREADED STUD(S)
STOCK DIAMETER0.375 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.375 INCHES IN
SURFACE TREATMENTNICKEL THREADED STUD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
SU2A1Interchangeable
interchangeable cross-reference
interchangeable
370930-1Interchangeable
interchangeable cross-reference
interchangeable
03000050Interchangeable
interchangeable cross-reference
interchangeable
1713929Interchangeable
interchangeable cross-reference
interchangeable
103-11-3Interchangeable
interchangeable cross-reference
interchangeable
3WB186Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B1031-13?
B1031-13 is a HANDLE,BAIL.
What parts can replace B1031-13?
There are 6 known substitutes for B1031-13: SU2A1, 370930-1, 03000050 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B1031-13?
B1031-13 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-020-8499. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026