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Technical Data Sheet
PartsTable / COMPONENT / 211-081
211-081 ✓ 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 TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_type: DRILLED, body_width: 6.375 INCHES NOMINAL IN, head_style: HEXAGON, body_height: 11.750 INCHES NOMINAL IN, body_length: 5.344 INCHES NOMINAL 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 5306-00-286-8236, 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
211-081
NSN: 5306-00-286-8236
FSC: 5306
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_typeDRILLED
body_width6.375 INCHES NOMINAL IN
head_styleHEXAGON
body_height11.750 INCHES NOMINAL IN
body_length5.344 INCHES NOMINAL IN
head_height0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
hole_diameter0.065 INCHES NOMINAL IN
hole_quantity6
thread_length0.448 INCHES MINIMUM IN
cooling_methodSELF-COOLED
inclosure_typeFULLY INCLOSED
NSN5306-00-286-8236
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 211-081 · 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: UNF
•
HOLE QUANTITY: 6
•
HEAD HEIGHT: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
WIDTH BETWEEN FLATS: 0.431 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
•
NONSTANDARD THREAD PITCH DIAMETER: +0.2216 TO 0.2238 INCHES IN
•
HOLE TYPE: DRILLED
•
HOLE DIAMETER: 0.065 INCHES NOMINAL IN
•
FEATURES PROVIDED: FINISHED HEAD
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF
HOLE QUANTITY6
HEAD HEIGHT0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.431 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
NONSTANDARD THREAD PITCH DIAMETER+0.2216 TO 0.2238 INCHES IN
HOLE TYPEDRILLED
HOLE DIAMETER0.065 INCHES NOMINAL IN
FEATURES PROVIDEDFINISHED HEAD
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD DIAMETER0.250 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
1.5S1BInterchangeable
interchangeable cross-reference
interchangeable
B4CXInterchangeable
interchangeable cross-reference
interchangeable
A37658Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 211-081?
211-081 is a TRANSFORMER,POWER.
What parts can replace 211-081?
There are 3 known substitutes for 211-081: 1.5S1B, B4CX, A37658. Substitute compatibility should be verified for your specific system.
What is the NSN for 211-081?
211-081 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-286-8236. 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