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420447 — SCREW,ASSEMBLED WASHER

✓ Government record, cited
Legrand · BOLT SCREW
PRODUCT OVERVIEW

420447: SCREW,ASSEMBLED WASHER.

The SCREW,ASSEMBLED WASHER is a Legrand industrial component. Key specifications include material: STEEL COMP 1010 OR STEEL COMP 1050 OR STEEL COMP 1566 OR STEEL OVERALL, head_style: ROUND, head_height: 0.091 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, thread_length: 0.188 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-042-0447, 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
420447
NSN: 5305-00-042-0447
FSC: 5305 — Screws
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OR STEEL COMP 1050 OR STEEL COMP 1566 OR STEEL OVERALL
head_styleROUND
head_height0.091 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
thread_length0.188 INCHES MAXIMUM IN
fastener_length0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM PRIMARY WASHER
washer_quantity1
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OVERALL
internal_drive_styleCROSS RECESS TYPE 1
NSN5305-00-042-0447
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 420447 · Legrand ⚠ 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: 0.091 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
PRIMARY WASHER OUTSIDE DIAMETER: 0.278 INCHES MINIMUM AND 0.288 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.188 INCHES MAXIMUM IN
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM PRIMARY WASHER
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.091 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
FASTENER LENGTH0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
PRIMARY WASHER OUTSIDE DIAMETER0.278 INCHES MINIMUM AND 0.288 INCHES MAXIMUM IN
THREAD LENGTH0.188 INCHES MAXIMUM IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM PRIMARY WASHER
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEROUND
PRIMARY WASHER STYLEFLAT INTERNAL TEETH
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 2
5305000420447Reference document
Same NSN cross-reference
Reference document — Informative reference only
5305-042-0447Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 420447?
420447 is a SCREW,ASSEMBLED WASHER manufactured by Legrand.
What parts can replace 420447?
There are 2 known substitutes for 420447: 5305000420447, 5305-042-0447. Substitute compatibility should be verified for your specific system.
What is the NSN for 420447?
420447 is cataloged in the U.S. Government catalog under NSN 5305-00-042-0447. 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.