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113-8873434ITEM21 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

113-8873434ITEM21: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT FILLISTER, head_height: 0.19 INCHES NOMINAL IN, head_diameter: 0.312 INCHES NOMINAL IN, thread_length: 0.875 INCHES NOMINAL IN, screw_material: STEEL, fastener_length: 1.065 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-702-3362, 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
113-8873434ITEM21
NSN: 5305-01-702-3362
FSC: 5305 — Screws
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
head_styleFLAT FILLISTER
head_height0.19 INCHES NOMINAL IN
head_diameter0.312 INCHES NOMINAL IN
thread_length0.875 INCHES NOMINAL IN
screw_materialSTEEL
fastener_length1.065 INCHES NOMINAL IN
special_featuresNYLON LOCKING FEATURE IN THREADS
thread_directionRIGHT-HAND
width_across_flats0.15625 INCHES NOMINAL IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.1875 INCHES IN
thread_quantity_per_inch32
NSN5305-01-702-3362
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 113-8873434ITEM21 · 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
•
WIDTH ACROSS FLATS: 0.15625 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.19 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.065 INCHES NOMINAL IN
•
THREAD LENGTH: 0.875 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.1875 INCHES IN
•
HEAD STYLE: FLAT FILLISTER
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.15625 INCHES NOMINAL IN
HEAD HEIGHT0.19 INCHES NOMINAL IN
FASTENER LENGTH1.065 INCHES NOMINAL IN
THREAD LENGTH0.875 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.1875 INCHES IN
HEAD STYLEFLAT FILLISTER
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL
SPECIAL FEATURESNYLON LOCKING FEATURE IN THREADS
INTERNAL DRIVE STYLEHEXAGON
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
91205A346Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 113-8873434ITEM21?
113-8873434ITEM21 is a SCREW,MACHINE.
What parts can replace 113-8873434ITEM21?
There is 1 known substitute for 113-8873434ITEM21: 91205A346. Substitute compatibility should be verified for your specific system.
What is the NSN for 113-8873434ITEM21?
113-8873434ITEM21 is cataloged in the U.S. Government catalog under NSN 5305-01-702-3362. 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.