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Technical Data Sheet
PartsTable / COMPONENT / 311 1-4
311 1-4 ✓ Verified by PartsTable
InLine · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

Mini-Gender-Changer for connecting or adapting two cables with Sub-D 25-pole female connectors. Key specifications include color: BLACK HOLDER, material: STEEL CORROSION RESISTING OVERALL, thickness: 0.250 INCHES NOMINAL IN, design_form: STRAIGHT, shank_style: EXTERNALLY THREADED, corner_shape: CHAMFERED INSIDE LEFT CORNER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-083-7704, 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
311 1-4
NSN: 5330-00-083-7704
FSC: 5330
CAGE: 63220 — FLOWSERVE INC (USA)
SPECIFICATIONS
colorBLACK HOLDER
materialSTEEL CORROSION RESISTING OVERALL
thickness0.250 INCHES NOMINAL IN
design_formSTRAIGHT
shank_styleEXTERNALLY THREADED
corner_shapeCHAMFERED INSIDE LEFT CORNER
flange_width0.0890 INCHES MINIMUM AND 0.0910 INCHES MAXIMUM IN
knuckle_typeFRICTION
pin_diameter0.093 INCHES NOMINAL IN
thread_class3A A
bore_diameter0.1900 INCHES NOMINAL IN
largest_width0.237 INCHES SINGLE END IN
NSN5330-00-083-7704
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 311 1-4 MFR: InLine ⚠ 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
•
APERTURE DIAMETER: 2.922 INCHES MINIMUM AND 2.953 INCHES MAXIMUM IN
•
CROSS-SECTIONAL THICKNESS: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: METAL WINDING W/ SOFT FILLER
•
OUTSIDE DIAMETER: 3.656 INCHES MINIMUM AND 3.718 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
APERTURE DIAMETER2.922 INCHES MINIMUM AND 2.953 INCHES MAXIMUM IN
CROSS-SECTIONAL THICKNESS0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEMETAL WINDING W/ SOFT FILLER
OUTSIDE DIAMETER3.656 INCHES MINIMUM AND 3.718 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
RA3M4-2Interchangeable
interchangeable cross-reference
interchangeable
MS21151-6GInterchangeable
interchangeable cross-reference
interchangeable
25704-281210-12-0Interchangeable
interchangeable cross-reference
interchangeable
FFH116Interchangeable
interchangeable cross-reference
interchangeable
01555Interchangeable
interchangeable cross-reference
interchangeable
311 1-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 311 1-4?
311 1-4 is a COVER,ELECTRICAL CONNECTOR manufactured by InLine.
What parts can replace 311 1-4?
There are 19 known substitutes for 311 1-4: RA3M4-2, MS21151-6G, 25704-281210-12-0 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 311 1-4?
311 1-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-083-7704. 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