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PartsTable / COMPONENT / 54A50A8
54A50A8 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: ROUND, head_height: 0.120 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.287 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN, thread_length: 0.287 INCHES MINIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-043-1281, 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
54A50A8
NSN: 5305-00-043-1281
FSC: 5305
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleROUND
head_height0.120 INCHES NOMINAL IN
thread_class2A A
head_diameter0.287 INCHES MINIMUM AND 0.309 INCHES MAXIMUM IN
thread_length0.287 INCHES MINIMUM IN
fastener_length0.437 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleSLOT
nominal_thread_diameter0.164 INCHES IN
first_diameter_from_head0.116 INCHES NOMINAL IN
NSN5305-00-043-1281
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 54A50A8 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD HEIGHT: 0.120 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
•
THREAD LENGTH: 0.287 INCHES MINIMUM IN
•
HEAD STYLE: ROUND
•
THREAD QUANTITY PER INCH: 32
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
FASTENER LENGTH: 0.437 INCHES NOMINAL IN
•
INTERNAL DRIVE STYLE: SLOT
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.120 INCHES NOMINAL IN
THREAD CLASS2A A
THREAD LENGTH0.287 INCHES MINIMUM IN
HEAD STYLEROUND
THREAD QUANTITY PER INCH32
NOMINAL THREAD DIAMETER0.164 INCHES IN
FASTENER LENGTH0.437 INCHES NOMINAL IN
INTERNAL DRIVE STYLESLOT
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
FIRST DIAMETER FROM HEAD0.116 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
A1911PC107Interchangeable
interchangeable cross-reference
interchangeable
A2133PC107Interchangeable
interchangeable cross-reference
interchangeable
A1353MPC107Interchangeable
interchangeable cross-reference
interchangeable
A7859Interchangeable
interchangeable cross-reference
interchangeable
SMB414068Interchangeable
interchangeable cross-reference
interchangeable
5950009014636Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54A50A8?
54A50A8 is a SCREW,EXTERNALLY RELIEVED BODY.
What parts can replace 54A50A8?
There are 9 known substitutes for 54A50A8: A1911PC107, A2133PC107, A1353MPC107 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 54A50A8?
54A50A8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-043-1281. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026