PartsTable
Technical Data Sheet
H-274 ✓ 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 LOCK,VALVE SPRING RETAINER is a the manufacturer industrial component. Key specifications include material: STEEL, body_width: 4.375 INCHES NOMINAL IN, case_style: SQUARE, seal_width: 0.469 INCHES NOMINAL IN, body_height: 3.406 INCHES NOMINAL IN, body_length: 5.438 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-154-4967, 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
H-274
NSN: 5330-00-154-4967
FSC: 5330
CAGE: 72328 — COTTA TRANSMISSION CO LLC (USA)
SPECIFICATIONS
materialSTEEL
body_width4.375 INCHES NOMINAL IN
case_styleSQUARE
seal_width0.469 INCHES NOMINAL IN
body_height3.406 INCHES NOMINAL IN
body_length5.438 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
overall_height0.125 INCHES NOMINAL IN
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating60.0 HERTZ MINIMUM AND 120.0 HERTZ MAXIMUM SINGLE COMPONENT
special_featuresCENTER TAP GROUNDED INTERNALLY TO CASE
style_designatorSTRAIGHT BORE-STRAIGHT SIDES W/ROUNDED CORNERS
NSN5330-00-154-4967
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H-274 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
HOUSING BORE DIAMETER: 3.543 INCHES NOMINAL IN
SEAL WIDTH: 0.469 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
MATERIAL: STEEL CASE
SEALING ELEMENT STYLE: ANGULAR
CASE STYLE: SQUARE
ACCOMMODATED SHAFT DIAMETER: 2.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HOUSING BORE DIAMETER3.543 INCHES NOMINAL IN
SEAL WIDTH0.469 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
MATERIALSTEEL CASE
MATERIALLEATHER SEALING ELEMENT
SEALING ELEMENT STYLEANGULAR
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER2.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
D421REVHInterchangeable
interchangeable cross-reference
interchangeable
D421Interchangeable
interchangeable cross-reference
interchangeable
1B936Interchangeable
interchangeable cross-reference
interchangeable
11073AInterchangeable
interchangeable cross-reference
interchangeable
SG544-68Interchangeable
interchangeable cross-reference
interchangeable
1121-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H-274?
H-274 is a LOCK,VALVE SPRING RETAINER.
What parts can replace H-274?
There are 26 known substitutes for H-274: D421REVH, D421, 1B936 and 23 more. Substitute compatibility should be verified for your specific system.
Is H-274 still available?
H-274 is currently cancelled.
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