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Technical Data Sheet

MIL-F-85731/1B — Technical Data Sheet

✓ 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 STRIKE,CATCH is a the manufacturer industrial component. Key specifications include height: 0.375 INCHES NOMINAL IN, material: UNABLE TO DECODE, overall_width: 0.936 INCHES NOMINAL IN, overall_length: 0.650 INCHES NOMINAL IN, style_designator: MORTISE, mounting_facility: UNTHREADED HOLE(S). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-088-6303, 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
MIL-F-85731/1B
NSN: 5340-01-088-6303
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
height0.375 INCHES NOMINAL IN
materialUNABLE TO DECODE
hole_quantity2
overall_width0.936 INCHES NOMINAL IN
overall_length0.650 INCHES NOMINAL IN
style_designatorMORTISE
mounting_facilityUNTHREADED HOLE(S)
material_thickness0.062 INCHES NOMINAL IN
mounting_hole_diameter0.193 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
NSN5340-01-088-6303
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-F-85731/1B 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
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
THREAD QUANTITY PER INCH: 28
•
MOUNTING METHOD: PIN(S)
•
THREAD LENGTH: 1.375 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNF
•
STYLE DESIGNATOR: KNURLED NO. 2
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESINCLUDES SPACER STOP FEATURE
NOMINAL THREAD SIZE0.250 INCHES IN
THREAD QUANTITY PER INCH28
MOUNTING METHODPIN(S)
THREAD LENGTH1.375 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNF
STYLE DESIGNATORKNURLED NO. 2
THREAD CLASS3A A
MATERIALUNABLE TO DECODE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
MIL-F-85731/1Upgraded Successor
successor cross-reference
successor
M85731/1-12Upgraded Successor
successor cross-reference
successor
MIL-DTL-85731/1Interchangeable
interchangeable cross-reference
interchangeable
M85731/1-6AInterchangeable
Same NIIN cross-reference
interchangeable
MS14108-6AInterchangeable
Same NIIN cross-reference
interchangeable
MS14108-14Interchangeable
Strike,catch
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-F-85731/1B?
MIL-F-85731/1B is a STRIKE,CATCH.
What parts can replace MIL-F-85731/1B?
There are 7 known substitutes for MIL-F-85731/1B: MIL-F-85731/1, M85731/1-12, MIL-DTL-85731/1 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-F-85731/1B?
MIL-F-85731/1B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-088-6303. This indicates validated use in U.S. government and defense supply chains.
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