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C54591 ✓ 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 BUFFER,RECOIL MECHANISM is a the manufacturer industrial component. Key specifications include length: 0.438 INCHES NOMINAL SQUARE END IN, material: STEEL OVERALL, thread_length: 1.440 INCHES MINIMUM IN, overall_length: 2.938 INCHES NOMINAL IN, shank_diameter: 0.323 INCHES MINIMUM IN, style_designator: STRAIGHT FLUTE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5136-00-227-8620, 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
C54591
NSN: 5136-00-227-8620
FSC: 5136
CAGE: 1NEX4 — KENNAMETAL INC. DIV KENNAMETAL INDUSTRIAL PRODUCTS GROUP (USA)
SPECIFICATIONS
length0.438 INCHES NOMINAL SQUARE END IN
materialSTEEL OVERALL
thread_length1.440 INCHES MINIMUM IN
flute_quantity4
overall_length2.938 INCHES NOMINAL IN
shank_diameter0.323 INCHES MINIMUM IN
style_designatorSTRAIGHT FLUTE
thread_directionRIGHT-HAND
thread_structureREGULAR
width_across_flats0.286 INCHES NOMINAL IN
starting_chamfer_typePLUG
thread_forming_methodGROUND
NSN5136-00-227-8620
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BUFFER,RECOIL MECHANISM TITLE COMPONENT PN C54591 MFR BUFFER,RECOIL MECHANIS
KEY FEATURES
•
THREAD FORMING METHOD: GROUND
•
MATERIAL: STEEL OVERALL
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.375-24 UNF
•
SPECIFICATION/STANDARD DATA: 05047-ASME B94.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
THREAD STRUCTURE: REGULAR
•
FLUTE QUANTITY: 4
•
WIDTH ACROSS FLATS: 0.286 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH2.938 INCHES NOMINAL IN
THREAD FORMING METHODGROUND
MATERIALSTEEL OVERALL
THREAD SIZE AND SERIES/TYPE DESIGNATOR0.375-24 UNF
SPECIFICATION/STANDARD DATA05047-ASME B94.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
THREAD STRUCTUREREGULAR
FLUTE QUANTITY4
WIDTH ACROSS FLATS0.286 INCHES NOMINAL IN
LENGTH0.438 INCHES NOMINAL SQUARE END IN
STARTING CHAMFER TYPEPLUG
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
GGG-T-70Interchangeable
interchangeable cross-reference
interchangeable
GGG-T-70 TY1SEBSTAInterchangeable
interchangeable cross-reference
interchangeable
B94.9 3/8-24 UNF HS G H1Interchangeable
interchangeable cross-reference
interchangeable
14181Interchangeable
interchangeable cross-reference
interchangeable
B94.9Interchangeable
interchangeable cross-reference
interchangeable
434-4297Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C54591?
C54591 is a BUFFER,RECOIL MECHANISM.
What parts can replace C54591?
There are 20 known substitutes for C54591: GGG-T-70, GGG-T-70 TY1SEBSTA, B94.9 3/8-24 UNF HS G H1 and 17 more. Substitute compatibility should be verified for your specific system.
Is C54591 still available?
C54591 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026