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Technical Data Sheet
PartsTable / COMPONENT / 887B051589
887B051589 ✓ 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 STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.485 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, material: STEEL COMP 303 PIN, drive_type: SLOTTED, grip_length: 0.366 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN, surface_treatment: PASSIVATE PIN, turnlock_stud_head_style: FILLISTER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-212-7774, 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
887B051589
NSN: 5325-01-212-7774
FSC: 5325
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)
SPECIFICATIONS
diameter0.485 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
materialSTEEL COMP 303 PIN
drive_typeSLOTTED
grip_length0.366 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN
surface_treatmentPASSIVATE PIN
turnlock_stud_head_styleFILLISTER
stud_shank_major_diameter0.243 INCHES NOMINAL IN
turnlock_stud_shank_styleSTUD SHANK
surface_treatment_document_and_classificationASTM A380 ASSN STD SINGLE TREATMENT RESPONSE PIN
NSN5325-01-212-7774
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 887B051589 · 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
•
STUD SHANK MAJOR DIAMETER: 0.243 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE PIN
•
SURFACE TREATMENT: PASSIVATE PIN
•
MATERIAL: STEEL COMP 303 PIN
•
GRIP LENGTH: 0.366 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN
•
TURNLOCK STUD HEAD STYLE: FILLISTER
•
DRIVE TYPE: SLOTTED
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
TECHNICAL CHARACTERISTICS (FLIS)
STUD SHANK MAJOR DIAMETER0.243 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A380 ASSN STD SINGLE TREATMENT RESPONSE PIN
SURFACE TREATMENTPASSIVATE PIN
MATERIALSTEEL COMP 303 PIN
GRIP LENGTH0.366 INCHES MINIMUM AND 0.382 INCHES MAXIMUM IN
TURNLOCK STUD HEAD STYLEFILLISTER
DRIVE TYPESLOTTED
TURNLOCK STUD SHANK STYLESTUD SHANK
DIAMETER0.485 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
124552Interchangeable
interchangeable cross-reference
interchangeable
74182SInterchangeable
interchangeable cross-reference
interchangeable
25704-281541-08-0Interchangeable
interchangeable cross-reference
interchangeable
51589Interchangeable
interchangeable cross-reference
interchangeable
TC-12-MInterchangeable
interchangeable cross-reference
interchangeable
048-1033-20Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 887B051589?
887B051589 is a STUD,TURNLOCK FASTENER.
What parts can replace 887B051589?
There are 10 known substitutes for 887B051589: 124552, 74182S, 25704-281541-08-0 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 887B051589?
887B051589 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-01-212-7774. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026