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Technical Data Sheet
4001656 ✓ 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 SEAT,BALL SOCKET is a the manufacturer industrial component. Key specifications include material: STEEL, thread_class: 3A NUT THREAD A, thread_length: 0.562 INCHES MINIMUM STUD THREAD IN, overall_length: 2.062 INCHES NOMINAL IN, special_features: CHAMFERED ON STUD THREAD ON STUD THREAD END. 0.047 IN.

BY 45.0 DEGRESS. ROUND ON NUT THREAD END IN, thread_direction: RIGHT-HAND STUD THREAD. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-331-5489, 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
4001656
NSN: 5340-00-331-5489
FSC: 5340
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL
thread_class3A NUT THREAD A
thread_length0.562 INCHES MINIMUM STUD THREAD IN
overall_length2.062 INCHES NOMINAL IN
special_featuresCHAMFERED ON STUD THREAD ON STUD THREAD END. 0.047 IN. BY 45.0 DEGRESS. ROUND ON NUT THREAD END IN
thread_directionRIGHT-HAND STUD THREAD
nominal_thread_size0.375 INCHES STUD THREAD IN
thread_pitch_diameters+0.3360 TO 0.3380 INCHES STUD THREAD IN
thread_quantity_per_inch24 NUT THREAD
thread_series_designatorUNF NUT THREAD
NSN5340-00-331-5489
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4001656 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
FSC APPLICATION DATA: AIRCRAFT TURBINE ENGINE
TECHNICAL CHARACTERISTICS (FLIS)
FSC APPLICATION DATAAIRCRAFT TURBINE ENGINE
END ITEM IDENTIFICATIONW/S: AIRCRAFT, F-16; AIRCRAFT, EAGLE F-15; ENGINE, AIRCRAFT, F100 PW220 (F-15C/D/E); ENGINE, AIRCRAFT, F100-PW-100 (F-15A/B/C); ENGINE, AIRCRAFT, F100-PW-200 (F-16A/B/C/D); SUPPORT EQUIPMENT, C-5 AIRCRAFT A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
4001656Interchangeable
interchangeable cross-reference
interchangeable
4001656-0Interchangeable
interchangeable cross-reference
interchangeable
1656Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4001656?
4001656 is a SEAT,BALL SOCKET.
What parts can replace 4001656?
There are 3 known substitutes for 4001656: 4001656, 4001656-0, 1656. Substitute compatibility should be verified for your specific system.
What is the NSN for 4001656?
4001656 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-331-5489. This indicates validated use in U.S. government and defense supply chains.
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