PartsTable
Technical Data Sheet
PartsTable / COMPONENT / SC-B-69988
SC-B-69988 ✓ 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,SHOULDERED AND STEPPED is a the manufacturer industrial component. Key specifications include material: STEEL, thread_class: 2A NUT THREAD A, thread_length: 0.281 INCHES NOMINAL STUD THREAD IN, overall_length: 1.756 INCHES NOMINAL IN, style_designator: SHOULDERED AND STEPPED, thread_direction: RIGHT-HAND NUT THREAD. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-356-3503, 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
SC-B-69988
NSN: 5307-00-356-3503
FSC: 5307
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL
thread_class2A NUT THREAD A
thread_length0.281 INCHES NOMINAL STUD THREAD IN
overall_length1.756 INCHES NOMINAL IN
style_designatorSHOULDERED AND STEPPED
thread_directionRIGHT-HAND NUT THREAD
surface_treatmentPHOSPHATE MANGANESE OVERALL
nominal_thread_size0.138 INCHES NUT THREAD IN
nut_end_shank_length0.600 INCHES MINIMUM AND 0.604 INCHES MAXIMUM IN
distance_across_flats0.500 INCHES NOMINAL IN
stud_end_shank_length0.312 INCHES NOMINAL IN
thread_quantity_per_inch32 STUD THREAD
NSN5307-00-356-3503
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SC-B-69988 · 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
•
THREAD DIRECTION: RIGHT-HAND STUD THREAD
•
THREAD LENGTH: 0.218 INCHES NOMINAL NUT THREAD IN
•
THREAD CLASS: 2A NUT THREAD A
•
THREAD SERIES DESIGNATOR: UNF NUT THREAD
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-F-14072 E211 FED STD SINGLE TREATMENT RESPONSE OVERALL
•
STUD END SHANK LENGTH: 0.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD LENGTH0.218 INCHES NOMINAL NUT THREAD IN
THREAD CLASS2A NUT THREAD A
THREAD SERIES DESIGNATORUNF NUT THREAD
THREAD LENGTH0.281 INCHES NOMINAL STUD THREAD IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072 E211 FED STD SINGLE TREATMENT RESPONSE OVERALL
STUD END SHANK LENGTH0.312 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) STUD THREAD
THREAD QUANTITY PER INCH40 NUT THREAD
NOMINAL THREAD SIZE0.164 INCHES STUD THREAD IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
51561Interchangeable
interchangeable cross-reference
interchangeable
543669Interchangeable
interchangeable cross-reference
interchangeable
51260Interchangeable
interchangeable cross-reference
interchangeable
911411-13Interchangeable
interchangeable cross-reference
interchangeable
CAK256Interchangeable
interchangeable cross-reference
interchangeable
8-94320487-0Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SC-B-69988?
SC-B-69988 is a STUD,SHOULDERED AND STEPPED.
What parts can replace SC-B-69988?
There are 10 known substitutes for SC-B-69988: 51561, 543669, 51260 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SC-B-69988?
SC-B-69988 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-356-3503. 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