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91510A109 — THUMBSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91510A109: THUMBSCREW.

The THUMBSCREW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: WING NO. 4, head_height: 0.453 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.50 INCHES NOMINAL IN, fastener_length: 0.50 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-627-0146, 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
91510A109
NSN: 5305-01-627-0146
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleWING NO. 4
head_height0.453 INCHES NOMINAL IN
thread_class2A A
thread_length0.50 INCHES NOMINAL IN
fastener_length0.50 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_between_flats0.891 INCHES NOMINAL IN
nominal_thread_diameter0.1900 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNF
NSN5305-01-627-0146
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91510A109 · 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: 0.453 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.50 INCHES NOMINAL IN
•
THREAD LENGTH: 0.50 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.1900 INCHES IN
•
HEAD STYLE: WING NO. 4
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.891 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.453 INCHES NOMINAL IN
FASTENER LENGTH0.50 INCHES NOMINAL IN
THREAD LENGTH0.50 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.1900 INCHES IN
HEAD STYLEWING NO. 4
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.891 INCHES NOMINAL IN
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYWING HEAD THUMB SCREW
THREAD CLASS2A A
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 91510A109?
91510A109 is a THUMBSCREW.
What is the NSN for 91510A109?
91510A109 is cataloged in the U.S. Government catalog under NSN 5305-01-627-0146. 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.