PartsTable
Technical Data Sheet
401266 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
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 401266 is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, inside_diameter: 0.293 INCHES NOMINAL IN, style_designator: CYLINDRICAL, spring_free_length: 0.516 INCHES NOMINAL IN, spring_solid_length: 0.406 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-274-2119, 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
MRO MRO_GENERAL 401266
NSN: 5306-00-274-2119
FSC: 5306
CAGE: 77294 — PIPER INDUSTRIAL MANUFACTURING COMPANY, LLC DIV PIPER INDUSTRIAL MANUFACTURING COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
coil_quantity3
inside_diameter0.293 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length0.516 INCHES NOMINAL IN
spring_solid_length0.406 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND
spring_deflection_rate240.000 POUNDS PER INCH MAXIMUM LBS
spring_free_outside_diameter0.563 INCHES NOMINAL IN
NSN5306-00-274-2119
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 401266 · 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
GRIP LENGTH: 0.250 INCHES NOMINAL IN
THREAD DIRECTION: RIGHT-HAND
FEATURES PROVIDED: FINISHED HEAD
THREAD CLASS: 3A A
HEAD STYLE: HEXAGON
WIDTH BETWEEN FLATS: 0.365 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS (FLIS)
GRIP LENGTH0.250 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
FEATURES PROVIDEDFINISHED HEAD
THREAD CLASS3A A
HEAD STYLEHEXAGON
WIDTH BETWEEN FLATS0.365 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
THREAD QUANTITY PER INCH32
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
401266Interchangeable
interchangeable cross-reference
interchangeable
8135Interchangeable
interchangeable cross-reference
interchangeable
718442-1Interchangeable
interchangeable cross-reference
interchangeable
D74969Interchangeable
interchangeable cross-reference
interchangeable
871271R1Interchangeable
interchangeable cross-reference
interchangeable
235658Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 401266?
401266 is a 401266. It is classified as a MRO (MRO_GENERAL).
What parts can replace 401266?
There are 18 known substitutes for 401266: 401266, 8135, 718442-1 and 15 more. Substitute compatibility should be verified for your specific system.
Is 401266 still available?
401266 is currently cancelled.
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