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442689 — SCREW,ASSEMBLED WASHER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

442689: SCREW,ASSEMBLED WASHER.

The SCREW,ASSEMBLED WASHER is a the manufacturer industrial component. Key specifications include head_style: PAN NO. 2, head_height: 0.162 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.594 INCHES MINIMUM AND 0.615 INCHES MAXIMUM IN, thread_length: 0.324 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN, fastener_length: 0.500 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-00-285-5272, 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
442689
NSN: 5305-00-285-5272
FSC: 5305 — Screws
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 FASTENER
head_stylePAN NO. 2
head_height0.162 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.594 INCHES MINIMUM AND 0.615 INCHES MAXIMUM IN
thread_length0.324 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN
fastener_length0.500 INCHES NOMINAL 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_styleSLOT
NSN5305-00-285-5272
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 442689 · 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: 0.162 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.500 INCHES NOMINAL 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: 0.588 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.324 INCHES MINIMUM AND 0.472 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 PRIMARY WASHER
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.162 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN
FASTENER LENGTH0.500 INCHES NOMINAL 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 DIAMETER0.588 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
THREAD LENGTH0.324 INCHES MINIMUM AND 0.472 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 PRIMARY WASHER
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES FASTENER
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEPAN NO. 2
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
H-4323 ITEM NO. 022Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SEMS 5/16"-18 X 1/2"LGReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 442689?
442689 is a SCREW,ASSEMBLED WASHER.
What parts can replace 442689?
There are 2 known substitutes for 442689: H-4323 ITEM NO. 022, SEMS 5/16"-18 X 1/2"LG. Substitute compatibility should be verified for your specific system.
What is the NSN for 442689?
442689 is cataloged in the U.S. Government catalog under NSN 5305-00-285-5272. 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.