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PartsTable / COMPONENT / D366-1-4
D366-1-4 ✓ 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 head_style: PAN NO. 2, head_height: 0.062 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.437 INCHES NOMINAL IN, thread_length: 0.250 INCHES MAXIMUM IN, screw_material: COPPER ALLOY.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-514-9299, 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
D366-1-4
NSN: 5305-00-514-9299
FSC: 5305
CAGE: 57771 — EDWIN B. STIMPSON COMPANY, INC. DBA STIMPSON (USA)
SPECIFICATIONS
head_stylePAN NO. 2
head_height0.062 INCHES NOMINAL IN
thread_class2A A
head_diameter0.437 INCHES NOMINAL IN
thread_length0.250 INCHES MAXIMUM IN
screw_materialCOPPER ALLOY
fastener_length0.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.164 INCHES IN
screw_surface_treatmentNICKEL
thread_quantity_per_inch32
NSN5305-00-514-9299
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: D366-1-4 · 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
•
SCREW SURFACE TREATMENT: NICKEL
•
HEAD DIAMETER: 0.437 INCHES NOMINAL IN
•
SCREW MATERIAL: COPPER ALLOY
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD LENGTH: 0.250 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 32
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
HEAD STYLE: PAN NO. 2
TECHNICAL CHARACTERISTICS (FLIS)
SCREW SURFACE TREATMENTNICKEL
HEAD DIAMETER0.437 INCHES NOMINAL IN
SCREW MATERIALCOPPER ALLOY
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.250 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HEAD STYLEPAN NO. 2
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
FASTENER LENGTH0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
5137HAInterchangeable
interchangeable cross-reference
interchangeable
X419Interchangeable
interchangeable cross-reference
interchangeable
419Interchangeable
interchangeable cross-reference
interchangeable
FFS92TYPE1STYLE2SInterchangeable
interchangeable cross-reference
interchangeable
6286Interchangeable
interchangeable cross-reference
interchangeable
AN510-10-16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D366-1-4?
D366-1-4 is a SCREW,MACHINE.
What parts can replace D366-1-4?
There are 18 known substitutes for D366-1-4: 5137HA, X419, 419 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D366-1-4?
D366-1-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-514-9299. 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