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81438-1 — COLLAR,SHAFT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

81438-1: COLLAR,SHAFT.

The COLLAR,SHAFT is a the manufacturer industrial component. Key specifications include end_item_identification: CATERPILLAR CB 534. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-377-7388, 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
81438-1
NSN: 4820-01-377-7388
NIINs: 013777388, 014148259
FSC: 4820 — Valves, Nonpowered
CAGE: 3EHZ0 — ESI ACQUISITION CORP DBA ESI ACQUISITION CORP (USA)
SPECIFICATIONS
end_item_identificationCATERPILLAR CB 534
NSN4820-01-377-7388
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 81438-1 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OPERATING PRESSURE: 380.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL THREAD SIZE: 6.000 INCHES ALL ENDS IN
•
MATERIAL: STEEL COMP 347 BODY
TECHNICAL CHARACTERISTICS
OPERATING PRESSURE380.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE6.000 INCHES ALL ENDS IN
MATERIALSTEEL COMP 347 BODY
MATERIALSTEEL COMP 347 FLOW CONTROL DEVICE
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 81438-1?
81438-1 is a COLLAR,SHAFT.
What is the NSN for 81438-1?
81438-1 is cataloged in the U.S. Government catalog under NSN 4820-01-377-7388. 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.