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Technical Data Sheet
PartsTable / COMPONENT / B1031-12
B1031-12 ✓ 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,BOW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, overall_length: 4.370 INCHES NOMINAL IN, handle_clearance: 1.435 INCHES NOMINAL IN, special_features: HANDLE FOLDS 90 DEGREES, surface_treatment: NICKEL OVERALL, nominal_thread_size: 0.375 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-931-5352, 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
B1031-12
NSN: 5340-00-931-5352
FSC: 5340
CAGE: 27494 — STAFFALL, INC. DBA STAFFALL INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
overall_length4.370 INCHES NOMINAL IN
handle_clearance1.435 INCHES NOMINAL IN
special_featuresHANDLE FOLDS 90 DEGREES
surface_treatmentNICKEL OVERALL
nominal_thread_size0.375 INCHES IN
mounting_facility_length0.625 INCHES NOMINAL IN
thread_series_designatorUNF
mounting_facility_quantity2
material_document_and_classificationQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-N-290,CLASS 1,TYPE 6 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
center_to_center_distance_between_mounting_facilities_parallel_to_length4.000 INCHES NOMINAL IN
NSN5340-00-931-5352
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B1031-12 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
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 4.000 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-N-290,CLASS 1,TYPE 6 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
MATERIAL: COPPER ALLOY OVERALL
•
SURFACE TREATMENT: NICKEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH4.000 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.375 INCHES IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-N-290,CLASS 1,TYPE 6 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
MATERIALCOPPER ALLOY OVERALL
SURFACE TREATMENTNICKEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH4.370 INCHES NOMINAL IN
SPECIAL FEATURESHANDLE FOLDS 90 DEGREES
HANDLE CLEARANCE1.435 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
256-100009-001Interchangeable
interchangeable cross-reference
interchangeable
103-112Interchangeable
interchangeable cross-reference
interchangeable
889488-2Interchangeable
interchangeable cross-reference
interchangeable
350-B-1Interchangeable
interchangeable cross-reference
interchangeable
1031-12AInterchangeable
interchangeable cross-reference
interchangeable
1031J12AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B1031-12?
B1031-12 is a HANDLE,BOW.
What parts can replace B1031-12?
There are 10 known substitutes for B1031-12: 256-100009-001, 103-112, 889488-2 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B1031-12?
B1031-12 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-931-5352. 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