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5203381 ITEM 106 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5203381 ITEM 106: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include thread_class: 2A A, screw_material: NICKEL ALLOY 400, fastener_length: 0.625 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, internal_drive_style: SLOT, nominal_thread_diameter: 0.250 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-239-3502, 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
5203381 ITEM 106
NSN: 5305-01-239-3502
FSC: 5305 — Screws
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
thread_class2A A
screw_materialNICKEL ALLOY 400
fastener_length0.625 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.250 INCHES IN
thread_quantity_per_inch20
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
nondefinitive_spec/std_data1 TYPE AND 1S STYLE
screw_material_document_and_classificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
NSN5305-01-239-3502
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5203381 ITEM 106 · 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
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 1S STYLE
•
SCREW MATERIAL: NICKEL ALLOY 400
•
INTERNAL DRIVE STYLE: SLOT
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.625 INCHES NOMINAL IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
NOMINAL THREAD DIAMETER0.250 INCHES IN
THREAD DIRECTIONRIGHT-HAND
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1S STYLE
SCREW MATERIALNICKEL ALLOY 400
INTERNAL DRIVE STYLESLOT
THREAD CLASS2A A
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SUBSTITUTES & CROSS-REFERENCES 3
FF-S-92 0.250-20UNC-2A X 0.625LGReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
QQ-N-281 CL-AReference document
Same NSN cross-reference
Reference document — Identification reference
DWG 445-5203381 ITEM 106Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 5203381 ITEM 106?
5203381 ITEM 106 is a SCREW,MACHINE.
What parts can replace 5203381 ITEM 106?
There are 3 known substitutes for 5203381 ITEM 106: FF-S-92 0.250-20UNC-2A X 0.625LG, QQ-N-281 CL-A, DWG 445-5203381 ITEM 106. Substitute compatibility should be verified for your specific system.
What is the NSN for 5203381 ITEM 106?
5203381 ITEM 106 is cataloged in the U.S. Government catalog under NSN 5305-01-239-3502. 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.