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Technical Data Sheet
PartsTable / COMPONENT / SCS2
SCS2 ✓ 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 COMP 303 OVERALL, head_style: KNURLED NO. 1, head_height: 0.375 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.500 INCHES NOMINAL IN, thread_length: 0.562 INCHES MINIMUM IN.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-281-2617, 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
SCS2
NSN: 5305-00-281-2617
FSC: 5305
CAGE: 21900 — FEDERAL DIV OF VICTOREEN INSTRUMENT CO INC (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleKNURLED NO. 1
head_height0.375 INCHES NOMINAL IN
thread_class2A A
head_diameter0.500 INCHES NOMINAL IN
thread_length0.562 INCHES MINIMUM IN
fastener_length1.125 INCHES NOMINAL IN
special_featuresW/CONE POINT
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.250 INCHES IN
NSN5305-00-281-2617
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SCS2 · 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 SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 20
•
FIRST DIAMETER FROM HEAD: 0.188 INCHES NOMINAL IN
•
HEAD DIAMETER: 0.500 INCHES NOMINAL IN
•
THREAD LENGTH: 0.562 INCHES MINIMUM IN
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER: 0.562 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
FIRST DIAMETER FROM HEAD0.188 INCHES NOMINAL IN
HEAD DIAMETER0.500 INCHES NOMINAL IN
THREAD LENGTH0.562 INCHES MINIMUM IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.562 INCHES NOMINAL IN
FASTENER LENGTH1.125 INCHES NOMINAL IN
THREAD CLASS2A A
NOMINAL THREAD DIAMETER0.250 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
310-124Interchangeable
interchangeable cross-reference
interchangeable
310-0124-00Interchangeable
interchangeable cross-reference
interchangeable
280MS098P325Interchangeable
interchangeable cross-reference
interchangeable
28043Interchangeable
interchangeable cross-reference
interchangeable
721169 ITEM 19Interchangeable
interchangeable cross-reference
interchangeable
3070AS698Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SCS2?
SCS2 is a SCREW,EXTERNALLY RELIEVED BODY.
What parts can replace SCS2?
There are 6 known substitutes for SCS2: 310-124, 310-0124-00, 280MS098P325 and 3 more. Substitute compatibility should be verified for your specific system.
Is SCS2 still available?
SCS2 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