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TW-4 — CONTROL,DIRECTIONAL SIGNAL LIGHT

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

TW-4: CONTROL,DIRECTIONAL SIGNAL LIGHT.

CONTROL,DIRECTIONAL SIGNAL LIGHT. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.240 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.555 INCHES NOMINAL IN, thread_length: 0.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-104-7963, 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
TW-4
NSN: 5305-00-104-7963
NIINs: 001047963, 004792608, 010489079, 015934109
FSC: 5305 — Screws
CAGE: 02064 — MJT HOLDINGS LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.240 INCHES NOMINAL IN
thread_class2A A
head_diameter0.555 INCHES NOMINAL IN
thread_length0.250 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.625 INCHES NOMINAL IN
shoulder_length0.250 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.373 INCHES NOMINAL FIRST SHOULDER IN
internal_drive_styleSLOT
NSN5305-00-104-7963
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: TW-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
•
HEAD HEIGHT: 0.240 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.250 INCHES NOMINAL FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.373 INCHES NOMINAL FIRST SHOULDER IN
•
THREAD LENGTH: 0.250 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.240 INCHES NOMINAL IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
SHOULDER LENGTH0.250 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER DIAMETER0.373 INCHES NOMINAL FIRST SHOULDER IN
THREAD LENGTH0.250 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLESLOT
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 TW-4?
TW-4 is a CONTROL,DIRECTIONAL SIGNAL LIGHT.
What is the NSN for TW-4?
TW-4 is cataloged in the U.S. Government catalog under NSN 5305-00-104-7963. 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.