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400256 — SEMICONDUCTOR DEVICE,PHOTO

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

400256: SEMICONDUCTOR DEVICE,PHOTO.

The SEMICONDUCTOR DEVICE,PHOTO is a the manufacturer industrial component. Key specifications include material: GLASS ENCLOSURE, head_style: PAN, thread_class: 2A A, usage_design: POWER, thread_length: 0.500 INCHES MINIMUM IN, overall_length: 1.0 FEET FT. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-236-3598, 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
400256
NSN: 5305-00-236-3598
NIINs: 002363598, 008607691, 016929805
FSC: 5305 — Screws
CAGE: 76371 — MECHANICAL EQUIPMENT COMPANY, INC. DBA MECHANICAL EQUIPMENT CO INC (USA)
SPECIFICATIONS
materialGLASS ENCLOSURE
head_stylePAN
thread_class2A A
usage_designPOWER
thread_length0.500 INCHES MINIMUM IN
overall_length1.0 FEET FT
screw_materialSTEEL
fastener_length3.730 INCHES NOMINAL IN
mounting_methodTERMINAL
terminal_length1.500 INCHES NOMINAL IN
special_featuresGROUND CABLE W/LOCK WASHER;WEIGHT 0.1 LBS LBS
termination_typeLUG TERMINAL W/MOUNTING HOLE FIRST END SEVENTH CONDUCTOR
NSN5305-00-236-3598
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 400256 · 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
•
FASTENER LENGTH: 3.730 INCHES NOMINAL IN
•
THREAD LENGTH: 0.500 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: PAN
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL
•
INTERNAL DRIVE STYLE: SLOT
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
FASTENER LENGTH3.730 INCHES NOMINAL IN
THREAD LENGTH0.500 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEPAN
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL
INTERNAL DRIVE STYLESLOT
THREAD CLASS2A A
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SUBSTITUTES & CROSS-REFERENCES 3
70226Reference document
Same NSN cross-reference
Reference document — Secondary reference
965649Reference document
Same NSN cross-reference
Reference document — Secondary reference
M2023FReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 400256?
400256 is a SEMICONDUCTOR DEVICE,PHOTO.
What parts can replace 400256?
There are 3 known substitutes for 400256: 70226, 965649, M2023F. Substitute compatibility should be verified for your specific system.
What is the NSN for 400256?
400256 is cataloged in the U.S. Government catalog under NSN 5305-00-236-3598. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.