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5126389 — PLUG,CYLINDER HEAD

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5126389: PLUG,CYLINDER HEAD.

The PLUG,CYLINDER HEAD is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STEEL,2.001 IN. OD,BODY 0.385 IN.

THK,0.375-18 @NPT THD MALE 0.469 IN. LG WITH 0.250 IN. INTERNAL HEX 0.250 IN.

DEEP IN. This part is cataloged in the U.S. Government catalog under NSN 5340-00-090-8766, 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
5126389
NSN: 5340-00-090-8766
NIINs: 000908766, 006466940
FSC: 5340 — Hardware, Commercial
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,2.001 IN. OD,BODY 0.385 IN. THK,0.375-18 @NPT THD MALE 0.469 IN. LG WITH 0.250 IN. INTERNAL HEX 0.250 IN. DEEP IN
NSN5340-00-090-8766
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5126389 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
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CRITICALITY CODE JUSTIFICATION: FEAT
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONFEAT
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
END ITEM IDENTIFICATION2320-01-097-0248,2320-01-097-0249,2320-01-100-7672,2320-01-097-0260,2320-01-195-7641, HEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
SUBSTITUTES & CROSS-REFERENCES 3
PC5103922Reference document
Same NSN cross-reference
Reference document — Secondary reference
2DD218Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5142335Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5126389?
5126389 is a PLUG,CYLINDER HEAD.
What parts can replace 5126389?
There are 3 known substitutes for 5126389: PC5103922, 2DD218, 5142335. Substitute compatibility should be verified for your specific system.
What is the NSN for 5126389?
5126389 is cataloged in the U.S. Government catalog under NSN 5340-00-090-8766. 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.