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TWB-068-A1 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

TWB-068-A1: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_height: 0.050 INCHES NOMINAL IN, thread_length: 0.250 INCHES NOMINAL IN, screw_material: STEEL CORROSION RESISTING, fastener_length: 0.250 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, internal_drive_style: CROSS RECESS TYPE II. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-613-9857, 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
TWB-068-A1
NSN: 5305-01-613-9857
FSC: 5305 — Screws
CAGE: 0B107 — L3 TECHNOLOGIES, INC. DBA INSIGHT TECHNOLOGY DIV INTEGRATED VISION SOLUTIONS (USA)
SPECIFICATIONS
head_height0.050 INCHES NOMINAL IN
thread_length0.250 INCHES NOMINAL IN
screw_materialSTEEL CORROSION RESISTING
fastener_length0.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE II
end_item_identification5855-01-600-2717
nominal_thread_diameter0.138 INCHES IN
thread_quantity_per_inch32
part_name_assigned_by_controlling_agencyPURGE SCREW
NSN5305-01-613-9857
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: TWB-068-A1 · 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: 0.050 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.250 INCHES NOMINAL IN
•
THREAD LENGTH: 0.250 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL CORROSION RESISTING
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE II
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.050 INCHES NOMINAL IN
FASTENER LENGTH0.250 INCHES NOMINAL IN
THREAD LENGTH0.250 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL CORROSION RESISTING
INTERNAL DRIVE STYLECROSS RECESS TYPE II
PART NAME ASSIGNED BY CONTROLLING AGENCYPURGE SCREW
END ITEM IDENTIFICATION5855-01-600-2717
THREAD QUANTITY PER INCH32
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
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 TWB-068-A1?
TWB-068-A1 is a SCREW,MACHINE.
What is the NSN for TWB-068-A1?
TWB-068-A1 is cataloged in the U.S. Government catalog under NSN 5305-01-613-9857. 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.