PartsTable
Technical Data Sheet
54266-8 ✓ 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,MACHINE is a the manufacturer industrial component. Key specifications include width: 11.000 INCHES NOMINAL IN, length: 14.000 INCHES NOMINAL IN, base_color: WHITE, usage_form: SHEET, specific_use: PROJECTION PRINTING, emulsion_type: BLACK AND WHITE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-726-1142, 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
54266-8
NSN: 5305-00-726-1142
FSC: 5305
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)
SPECIFICATIONS
width11.000 INCHES NOMINAL IN
length14.000 INCHES NOMINAL IN
base_colorWHITE
usage_formSHEET
specific_usePROJECTION PRINTING
emulsion_typeBLACK AND WHITE
contrast_ratingVARIABLE
precious_materialSILVER
reproduction_typePRINT
surface_conditionSMOOTH
surface_reflectanceGLOSS
emulsion_sensitivityBLUE SENSITIVE
NSN5305-00-726-1142
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 54266-8 · 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 QUANTITY PER INCH: 24
THREAD LENGTH: 0.531 INCHES MINIMUM IN
THREAD DIRECTION: RIGHT-HAND
THREAD SERIES DESIGNATOR: UNF
HEAD DIAMETER: 0.628 INCHES MINIMUM AND 0.633 INCHES MAXIMUM IN
SCREW SURFACE TREATMENT: CADMIUM
THREAD CLASS: 3A A
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH24
THREAD LENGTH0.531 INCHES MINIMUM IN
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNF
HEAD DIAMETER0.628 INCHES MINIMUM AND 0.633 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM
THREAD CLASS3A A
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEFLAT COUNTERSUNK UNDERCUT
HEAD HEIGHT0.087 INCHES MINIMUM AND 0.089 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
MULTIGRADE FB SWInterchangeable
interchangeable cross-reference
interchangeable
5551Interchangeable
interchangeable cross-reference
interchangeable
189 3890Interchangeable
interchangeable cross-reference
interchangeable
HT5UA8Interchangeable
Same NIIN cross-reference
interchangeable
HT403A5-8Interchangeable
Same NIIN cross-reference
interchangeable
3M47-5-8Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54266-8?
54266-8 is a SCREW,MACHINE.
What parts can replace 54266-8?
There are 6 known substitutes for 54266-8: MULTIGRADE FB SW, 5551, 189 3890 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 54266-8?
54266-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-726-1142. This indicates validated use in U.S. government and defense supply chains.
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