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4996 — KEY SET,SOCKET HEAD SCREW

✓ Government record, cited
Zyxel · ORING SEAL
PRODUCT OVERVIEW

4996: KEY SET,SOCKET HEAD SCREW.

The KEY SET,SOCKET HEAD SCREW is a Zyxel industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, shaft_type: ROUND SINGLE ACTUATOR, handle_type: L-STYLE, shaft_length: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM SINGLE ACTUATOR IN, thread_class: 2A SINGLE MOUNTING FACILITY A, physical_form: LIQUID. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-297-9859, 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
4996
NSN: 5331-00-297-9859
NIINs: 002979859, 008904368, 011957820, 013813378, 014731917, 014939460, 014989603
FSC: 5331 — O-ring
CAGE: 71871 — ALFA LAVAL INC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
shaft_typeROUND SINGLE ACTUATOR
handle_typeL-STYLE
key_quantity9
shaft_length0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM SINGLE ACTUATOR IN
thread_class2A SINGLE MOUNTING FACILITY A
physical_formLIQUID
terminal_typeWIRE LEAD
thread_length0.560 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
container_typeINDEX HOLDER
overall_length3.570 INCHES NOMINAL IN
shaft_diameter0.310 INCHES MINIMUM AND 0.314 INCHES MAXIMUM SINGLE ACTUATOR IN
NSN5331-00-297-9859
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4996 MFR: Zyxel ⚠ 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
•
CROSS-SECTIONAL HEIGHT: 0.188 INCHES NOMINAL IN
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MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.188 INCHES NOMINAL IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 2
5330-223-17Reference document
Same NSN cross-reference
Reference document — Secondary reference
4996DReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4996?
4996 is a KEY SET,SOCKET HEAD SCREW manufactured by Zyxel.
What parts can replace 4996?
There are 2 known substitutes for 4996: 5330-223-17, 4996D. Substitute compatibility should be verified for your specific system.
What is the NSN for 4996?
4996 is cataloged in the U.S. Government catalog under NSN 5331-00-297-9859. This indicates validated use in U.S. government and defense supply chains.
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