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Technical Data Sheet
PartsTable / COMPONENT / AT-1-1/4PLUG
AT-1-1/4PLUG ✓ 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 AT-1-1/4PLUG is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-815-8014, 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
AT-1-1/4PLUG
NSN: 5306-00-815-8014
FSC: 5306
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
Part NumberAT-1-1/4PLUG
NSN5306-00-815-8014
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AT-1-1/4PLUG · 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
•
HEAD HEIGHT: 0.190 INCHES NOMINAL IN
•
HEAD STYLE: DEE
•
SHANK UNTHREADED HOLE DIAMETER: 0.078 INCHES NOMINAL FIRST HOLE IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER: 0.090 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 1.050 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
FIRST DIAMETER FROM HEAD: 0.300 INCHES MINIMUM AND 0.304 INCHES MAXIMUM IN
•
THIRD DIAMETER FROM HEAD: 0.186 INCHES MINIMUM AND 0.196 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.190 INCHES NOMINAL IN
HEAD STYLEDEE
SHANK UNTHREADED HOLE DIAMETER0.078 INCHES NOMINAL FIRST HOLE IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.090 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER1.050 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
FIRST DIAMETER FROM HEAD0.300 INCHES MINIMUM AND 0.304 INCHES MAXIMUM IN
THIRD DIAMETER FROM HEAD0.186 INCHES MINIMUM AND 0.196 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER0.110 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
SECOND DIAMETER FROM HEAD0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
WWP471TYPE2Interchangeable
interchangeable cross-reference
interchangeable
AT1-1-4PLUGInterchangeable
interchangeable cross-reference
interchangeable
MS51884-13HInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AT-1-1/4PLUG?
AT-1-1/4PLUG is a AT-1-1/4PLUG.
What parts can replace AT-1-1/4PLUG?
There are 3 known substitutes for AT-1-1/4PLUG: WWP471TYPE2, AT1-1-4PLUG, MS51884-13H. Substitute compatibility should be verified for your specific system.
What is the NSN for AT-1-1/4PLUG?
AT-1-1/4PLUG is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-815-8014. 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