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H-0991 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

H-0991: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include thread_length: 0.500 INCHES NOMINAL IN, special_features: MADE OF BRASS, thread_direction: RIGHT-HAND, nominal_thread_diameter: 0.190 INCHES IN, thread_quantity_per_inch: 32, thread_series_designator: UNF. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-476-3533, 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
H-0991
NSN: 5305-01-476-3533
FSC: 5305 — Screws
CAGE: 14304 — L3HARRIS TECHNOLOGIES, INC. DBA HARRIS CORP DIV HARRIS DEFENSE COMMUNICATIONS (USA)
SPECIFICATIONS
thread_length0.500 INCHES NOMINAL IN
special_featuresMADE OF BRASS
thread_directionRIGHT-HAND
nominal_thread_diameter0.190 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNF
part_name_assigned_by_controlling_agencyTRIMMED HEX HEAD CAP SCREW
NSN5305-01-476-3533
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: H-0991 · 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
•
THREAD LENGTH: 0.500 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD QUANTITY PER INCH: 32
•
THREAD SERIES DESIGNATOR: UNF
TECHNICAL CHARACTERISTICS
THREAD LENGTH0.500 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESMADE OF BRASS
PART NAME ASSIGNED BY CONTROLLING AGENCYTRIMMED HEX HEAD CAP SCREW
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNF
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 H-0991?
H-0991 is a SCREW,CAP,HEXAGON HEAD.
What is the NSN for H-0991?
H-0991 is cataloged in the U.S. Government catalog under NSN 5305-01-476-3533. 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.