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728881-1 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

728881-1: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: CROWNED HEXAGON, head_height: 0.048 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.281 INCHES MINIMUM IN, screw_material: STEEL COMP 416, fastener_length: 0.312 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-207-6540, 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
728881-1
NSN: 5305-00-207-6540
FSC: 5305 — Screws
CAGE: 55972 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS (USA)
SPECIFICATIONS
head_styleCROWNED HEXAGON
head_height0.048 INCHES NOMINAL IN
thread_class3A A
thread_length0.281 INCHES MINIMUM IN
screw_materialSTEEL COMP 416
fastener_length0.312 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_between_flats0.156 INCHES NOMINAL IN
nominal_thread_diameter0.073 INCHES IN
minimum_tensile_strength70000 POUNDS PER SQUARE INCH LBS
thread_quantity_per_inch72
thread_series_designatorUNF
NSN5305-00-207-6540
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 728881-1 · 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: 0.048 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.312 INCHES NOMINAL IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE
•
THREAD LENGTH: 0.281 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.073 INCHES IN
•
HEAD STYLE: CROWNED HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.156 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.048 INCHES NOMINAL IN
FASTENER LENGTH0.312 INCHES NOMINAL IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE
THREAD LENGTH0.281 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.073 INCHES IN
HEAD STYLECROWNED HEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.156 INCHES NOMINAL IN
SCREW MATERIALSTEEL COMP 416
MINIMUM TENSILE STRENGTH70000 POUNDS PER SQUARE INCH LBS
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 728881-1?
728881-1 is a SCREW,MACHINE.
What is the NSN for 728881-1?
728881-1 is cataloged in the U.S. Government catalog under NSN 5305-00-207-6540. 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.