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401658 — TRANSFORMER,POWER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

401658: TRANSFORMER,POWER.

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include material: STEEL, inclosure_type: FULLY INCLOSED, fsc_application_data: 1. CONTROL,MAIN FUEL,ENGINE,AIRCRAFT, attachment_to_item_supported_method: FRICTION MOUNTED BY SPRING COMPRESSION, supporting_object/surface_attachment_method: FRICTION MOUNTED BY SPRING COMPRESSION ON MATED MACHINED PARTS.

This part is cataloged in the U.S. Government catalog under NSN 5340-00-579-7633, 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
401658
NSN: 5340-00-579-7633
NIINs: 005797633, 010257201, 013457610
FSC: 5340 — Hardware, Commercial
CAGE: 66503 — WOODWARD, INC. DIV FUEL SYSTEMS AND CONTROLS (USA)
SPECIFICATIONS
materialSTEEL
inclosure_typeFULLY INCLOSED
fsc_application_data1. CONTROL,MAIN FUEL,ENGINE,AIRCRAFT
attachment_to_item_supported_methodFRICTION MOUNTED BY SPRING COMPRESSION
supporting_object/surface_attachment_methodFRICTION MOUNTED BY SPRING COMPRESSION ON MATED MACHINED PARTS
NSN5340-00-579-7633
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 401658 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: 1. CONTROL,MAIN FUEL,ENGINE,AIRCRAFT
•
SUPPORTING OBJECT/SURFACE ATTACHMENT METHOD: FRICTION MOUNTED BY SPRING COMPRESSION ON MATED MACHINED PARTS
•
ATTACHMENT TO ITEM SUPPORTED METHOD: FRICTION MOUNTED BY SPRING COMPRESSION
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATA1. CONTROL,MAIN FUEL,ENGINE,AIRCRAFT
SUPPORTING OBJECT/SURFACE ATTACHMENT METHODFRICTION MOUNTED BY SPRING COMPRESSION ON MATED MACHINED PARTS
ATTACHMENT TO ITEM SUPPORTED METHODFRICTION MOUNTED BY SPRING COMPRESSION
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 401658?
401658 is a TRANSFORMER,POWER.
What is the NSN for 401658?
401658 is cataloged in the U.S. Government catalog under NSN 5340-00-579-7633. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.