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Technical Data Sheet
PartsTable / COMPONENT / C1009 15991
C1009 15991 ✓ 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,PLAIN is a the manufacturer industrial component. Key specifications include thread_class: 2A NUT THREAD A, thread_length: 0.688 INCHES MINIMUM STUD THREAD IN, overall_length: 2.250 INCHES NOMINAL IN, thread_direction: RIGHT-HAND NUT THREAD, nominal_thread_size: 0.625 INCHES STUD THREAD IN, thread_pitch_diameters: +0.5689 TO 0.5720 INCHES STUD THREAD 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 5307-00-998-1047, 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
C1009 15991
NSN: 5307-00-998-1047
FSC: 5307
CAGE: 25567 — THE GORMAN-RUPP COMPANY DIV GORMAN-RUPP (USA)
SPECIFICATIONS
thread_class2A NUT THREAD A
thread_length0.688 INCHES MINIMUM STUD THREAD IN
overall_length2.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND NUT THREAD
nominal_thread_size0.625 INCHES STUD THREAD IN
thread_pitch_diameters+0.5689 TO 0.5720 INCHES STUD THREAD IN
thread_quantity_per_inch11 STUD THREAD
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) NUT THREAD
NSN5307-00-998-1047
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: C1009 15991 · 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
•
NOMINAL THREAD SIZE: 0.625 INCHES STUD THREAD IN
•
THREAD DIRECTION: RIGHT-HAND NUT THREAD
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) NUT THREAD
•
THREAD QUANTITY PER INCH: 11 STUD THREAD
•
THREAD PITCH DIAMETERS: +0.5689 TO 0.5720 INCHES STUD THREAD IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.625 INCHES STUD THREAD IN
THREAD DIRECTIONRIGHT-HAND NUT THREAD
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) NUT THREAD
THREAD SERIES DESIGNATORUNS STUD THREAD
THREAD QUANTITY PER INCH11 STUD THREAD
THREAD PITCH DIAMETERS+0.5689 TO 0.5720 INCHES STUD THREAD IN
NOMINAL THREAD SIZE0.625 INCHES NUT THREAD IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
OVERALL LENGTH2.250 INCHES NOMINAL IN
THREAD QUANTITY PER INCH11 NUT THREAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
A9179Interchangeable
interchangeable cross-reference
interchangeable
AU-7208Interchangeable
interchangeable cross-reference
interchangeable
SM-B-525444Interchangeable
interchangeable cross-reference
interchangeable
HPG241M1Interchangeable
interchangeable cross-reference
interchangeable
B1009Interchangeable
interchangeable cross-reference
interchangeable
SR1TAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C1009 15991?
C1009 15991 is a STUD,PLAIN.
What parts can replace C1009 15991?
There are 9 known substitutes for C1009 15991: A9179, AU-7208, SM-B-525444 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C1009 15991?
C1009 15991 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-998-1047. 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