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021.450517 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

021.450517: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK UNDERCUT, head_height: 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.147 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN, thread_length: 0.089 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, screw_material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-766-2422, 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
021.450517
NSN: 5305-00-766-2422
FSC: 5305 — Screws
CAGE: D1597 — AIM INFRAROT-MODULE GMBH (DEU)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK UNDERCUT
head_height0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.147 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN
thread_length0.089 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
screw_materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
fastener_length0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.086 INCHES IN
screw_surface_treatmentPASSIVATE
NSN5305-00-766-2422
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 021.450517 · 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: 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: PASSIVATE
•
FASTENER LENGTH: 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES
•
THREAD LENGTH: 0.089 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.086 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK UNDERCUT
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTPASSIVATE
FASTENER LENGTH0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES
THREAD LENGTH0.089 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.086 INCHES IN
HEAD STYLEFLAT COUNTERSUNK UNDERCUT
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH LBS
SUBSTITUTES & CROSS-REFERENCES 9
00020042NSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
946839-202Reference document
Same NSN cross-reference
Reference document — Secondary reference
5305007662422Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS35249-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
342-0131-000Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS35200&1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 021.450517?
021.450517 is a SCREW,MACHINE.
What parts can replace 021.450517?
There are 9 known substitutes for 021.450517: 00020042N, 946839-202, 5305007662422 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 021.450517?
021.450517 is cataloged in the U.S. Government catalog under NSN 5305-00-766-2422. 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.