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PartsTable / COMPONENT / B158154
B158154 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The LOCK,VALVE SPRING RETAINER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740, overall_height: 0.266 INCHES NOMINAL IN, style_designator: STRAIGHT BORE-TOP AND BOTTOM RADIUS, thread_provision: UNTHREADED, fsc_application_data: GASOLINE ENGINE,TANK, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-615-8154, 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
B158154
NSN: 2805-00-615-8154
FSC: 2805
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 8740
overall_height0.266 INCHES NOMINAL IN
style_designatorSTRAIGHT BORE-TOP AND BOTTOM RADIUS
thread_provisionUNTHREADED
fsc_application_dataGASOLINE ENGINE,TANK
casehardening_indicatorNOT CASEHARDENED
largest_inside_diameter0.5715 INCHES MINIMUM AND 0.5725 INCHES MAXIMUM IN
largest_outside_diameter0.8016 INCHES NOMINAL IN
metallic_hardness_rating83.0 MINIMUM ROCKWELL SUPERFICIAL 15-N AND 85.0 MAXIMUM ROCKWELL SUPERFICIAL 15-N
inside_diameter_top_radius0.060 INCHES NOMINAL IN
inside_diameter_bottom_radius0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
outside_included_angle_in_deg11.89
NSN2805-00-615-8154
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LOCK,VALVE SPRING RETAINER TITLE COMPONENT PN B158154 MFR LOCK,VALVE SPRING RETA
KEY FEATURES
•
THREAD PROVISION: UNTHREADED
•
LARGEST INSIDE DIAMETER: 0.5715 INCHES MINIMUM AND 0.5725 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 8740
•
STYLE DESIGNATOR: STRAIGHT BORE-TOP AND BOTTOM RADIUS
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE
•
FSC APPLICATION DATA: GASOLINE ENGINE,TANK
•
INSIDE DIAMETER BOTTOM RADIUS: 0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD PROVISIONUNTHREADED
LARGEST INSIDE DIAMETER0.5715 INCHES MINIMUM AND 0.5725 INCHES MAXIMUM IN
MATERIALSTEEL COMP 8740
STYLE DESIGNATORSTRAIGHT BORE-TOP AND BOTTOM RADIUS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE
FSC APPLICATION DATAGASOLINE ENGINE,TANK
OVERALL HEIGHT0.266 INCHES NOMINAL IN
INSIDE DIAMETER BOTTOM RADIUS0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
METALLIC HARDNESS RATING83.0 MINIMUM ROCKWELL SUPERFICIAL 15-N AND 85.0 MAXIMUM ROCKWELL SUPERFICIAL 15-N
LARGEST OUTSIDE DIAMETER0.8016 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
21-419Interchangeable
interchangeable cross-reference
interchangeable
0453-068Interchangeable
interchangeable cross-reference
interchangeable
MS51957-7Interchangeable
interchangeable cross-reference
interchangeable
20032-7Interchangeable
interchangeable cross-reference
interchangeable
43A25034Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-7560Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B158154?
B158154 is a LOCK,VALVE SPRING RETAINER.
What parts can replace B158154?
There are 15 known substitutes for B158154: 21-419, 0453-068, MS51957-7 and 12 more. Substitute compatibility should be verified for your specific system.
Is B158154 still available?
B158154 is currently cancelled.
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Last verified: July 2026