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Technical Data Sheet
PartsTable / COMPONENT / SCB27421
SCB27421 ✓ 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 BOLT,HOOK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OVERALL, thread_class: 2A A, thread_length: 3.000 INCHES MINIMUM IN, style_designator: RIGHT ANGLE BEND, thread_direction: RIGHT-HAND, hook_inside_width: 2.000 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-206-4989, 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
SCB27421
NSN: 5306-00-206-4989
FSC: 5306
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OVERALL
thread_class2A A
thread_length3.000 INCHES MINIMUM IN
style_designatorRIGHT ANGLE BEND
thread_directionRIGHT-HAND
hook_inside_width2.000 INCHES NOMINAL IN
surface_treatmentCHROMIUM OVERALL
nominal_thread_diameter0.750 INCHES IN
thread_quantity_per_inch10
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
distance_from_inside_of_bend_to_shank_end18.000 INCHES NOMINAL IN
NSN5306-00-206-4989
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SCB27421 · 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
•
DISTANCE FROM INSIDE OF BEND TO SHANK END: 18.000 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
MATERIAL: STEEL COMP 1020 OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
SURFACE TREATMENT: CHROMIUM OVERALL
•
HOOK INSIDE WIDTH: 2.000 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD QUANTITY PER INCH: 10
TECHNICAL CHARACTERISTICS (FLIS)
DISTANCE FROM INSIDE OF BEND TO SHANK END18.000 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.750 INCHES IN
MATERIALSTEEL COMP 1020 OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SURFACE TREATMENTCHROMIUM OVERALL
HOOK INSIDE WIDTH2.000 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH10
THREAD CLASS2A A
THREAD LENGTH3.000 INCHES MINIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
6515NCM104804Upgraded Successor
successor cross-reference
successor
17109Upgraded Successor
successor cross-reference
successor
202.880Upgraded Successor
successor cross-reference
successor
373299-1Interchangeable
interchangeable cross-reference
interchangeable
163073Interchangeable
interchangeable cross-reference
interchangeable
989108-20BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SCB27421?
SCB27421 is a BOLT,HOOK.
What parts can replace SCB27421?
There are 9 known substitutes for SCB27421: 6515NCM104804, 17109, 202.880 and 6 more. Substitute compatibility should be verified for your specific system.
Is SCB27421 still available?
SCB27421 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