PartsTable
Technical Data Sheet

240-403 1/2SS — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

240-403 1/2SS: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT CHAMFER, head_height: 0.066 INCHES MINIMUM AND 0.169 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.172 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN, thread_length: 0.174 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN, screw_material: STEEL COMP 303 OR STEEL COMP 303SE. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-487-5934, 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
240-403 1/2SS
NSN: 5305-00-487-5934
FSC: 5305 — Screws
CAGE: 55972 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS (USA)
SPECIFICATIONS
head_styleFLAT CHAMFER
head_height0.066 INCHES MINIMUM AND 0.169 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.172 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
thread_length0.174 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN
screw_materialSTEEL COMP 303 OR STEEL COMP 303SE
fastener_length0.214 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.112 INCHES IN
thread_quantity_per_inch48
thread_series_designatorUNF
NSN5305-00-487-5934
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 240-403 1/2SS · 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: 0.066 INCHES MINIMUM AND 0.169 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.214 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: GQQ-S-764 FED SPEC ALL MATERIAL RESPONSES
•
THREAD LENGTH: 0.174 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL COMP 303 OR STEEL COMP 303SE
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.066 INCHES MINIMUM AND 0.169 INCHES MAXIMUM IN
FASTENER LENGTH0.214 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONGQQ-S-764 FED SPEC ALL MATERIAL RESPONSES
THREAD LENGTH0.174 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.112 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 303 OR STEEL COMP 303SE
INTERNAL DRIVE STYLESLOT
THREAD CLASS3A A
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 1
FFIL-0-403 1/2SSReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 240-403 1/2SS?
240-403 1/2SS is a SCREW,MACHINE.
What parts can replace 240-403 1/2SS?
There is 1 known substitute for 240-403 1/2SS: FFIL-0-403 1/2SS. Substitute compatibility should be verified for your specific system.
What is the NSN for 240-403 1/2SS?
240-403 1/2SS is cataloged in the U.S. Government catalog under NSN 5305-00-487-5934. 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.