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Technical Data Sheet
PartsTable / COMPONENT / NP11126PC3
NP11126PC3 ✓ 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,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include head_height: 0.375 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 1.375 INCHES NOMINAL IN, fastener_length: 4.875 INCHES NOMINAL IN, first_diameter_from_head: 0.681 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN, third_diameter_from_head: 0.681 INCHES MINIMUM AND 0.683 INCHES MAXIMUM 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 5306-00-395-1645, 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
NP11126PC3
NSN: 5306-00-395-1645
FSC: 5306
CAGE: 55509 — COOPER CAMERON CORP AJAX-SUPERIOR DIV (USA)
SPECIFICATIONS
head_height0.375 INCHES NOMINAL IN
thread_class3A A
thread_length1.375 INCHES NOMINAL IN
fastener_length4.875 INCHES NOMINAL IN
first_diameter_from_head0.681 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
third_diameter_from_head0.681 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
second_diameter_from_head0.6872 INCHES MINIMUM AND 0.6875 INCHES MAXIMUM IN
shank_unthreaded_hole_diameter0.156 INCHES NOMINAL FIRST HOLE IN
distance_from_centerline_to_flat0.438 INCHES NOMINAL IN
distance_from_head_largest_bearing_surface_to_shank_hole_center4.625 INCHES NOMINAL FIRST HOLE IN
distance_from_largest_bearing_surface_of_head_to_end_of_first_diameter0.625 INCHES NOMINAL IN
distance_from_largest_bearing_surface_of_head_to_end_of_third_diameter3.500 INCHES NOMINAL IN
NSN5306-00-395-1645
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NP11126PC3 · 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
•
FIRST DIAMETER FROM HEAD: 0.681 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER: 0.625 INCHES NOMINAL IN
•
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER: 4.625 INCHES NOMINAL FIRST HOLE IN
•
SECOND DIAMETER FROM HEAD: 0.6872 INCHES MINIMUM AND 0.6875 INCHES MAXIMUM IN
•
THIRD DIAMETER FROM HEAD: 0.681 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 2.625 INCHES NOMINAL IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER: 3.500 INCHES NOMINAL IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.156 INCHES NOMINAL FIRST HOLE IN
TECHNICAL CHARACTERISTICS (FLIS)
FIRST DIAMETER FROM HEAD0.681 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.625 INCHES NOMINAL IN
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER4.625 INCHES NOMINAL FIRST HOLE IN
SECOND DIAMETER FROM HEAD0.6872 INCHES MINIMUM AND 0.6875 INCHES MAXIMUM IN
THIRD DIAMETER FROM HEAD0.681 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER2.625 INCHES NOMINAL IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER3.500 INCHES NOMINAL IN
SHANK UNTHREADED HOLE DIAMETER0.156 INCHES NOMINAL FIRST HOLE IN
FASTENER LENGTH4.875 INCHES NOMINAL IN
THREAD LENGTH1.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
955535Interchangeable
interchangeable cross-reference
interchangeable
5305003354665Interchangeable
interchangeable cross-reference
interchangeable
7434Interchangeable
interchangeable cross-reference
interchangeable
P2069AInterchangeable
Same NIIN cross-reference
interchangeable
NP2075PC4Interchangeable
Same NIIN cross-reference
interchangeable
NP9066PC4Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NP11126PC3?
NP11126PC3 is a BOLT,EXTERNALLY RELIEVED BODY.
What parts can replace NP11126PC3?
There are 9 known substitutes for NP11126PC3: 955535, 5305003354665, 7434 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NP11126PC3?
NP11126PC3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-395-1645. 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