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841581-26 — SCREW ASSEMBLY,PANEL

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

841581-26: SCREW ASSEMBLY,PANEL.

The SCREW ASSEMBLY,PANEL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 FASTENER, head_style: KNURLED NO. 2, head_height: 0.082 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.250 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN, thread_length: 0.170 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-334-6656, 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
841581-26
NSN: 5305-01-334-6656
FSC: 5305 — Screws
CAGE: 13973 — LITTON SYSTEMS INC. DIV NAVIGATION SYSTEMS DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 302 FASTENER
head_styleKNURLED NO. 2
head_height0.082 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.250 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
thread_length0.170 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
fastener_length0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentOXIDE PRIMARY WASHER
internal_drive_styleSLOT
nominal_thread_diameter0.138 INCHES IN
thread_quantity_per_inch32
NSN5305-01-334-6656
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 841581-26 · 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: 0.082 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING
•
MATERIAL ACCOMMODATED THICKNESS: 0.063 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.082 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN
FASTENER LENGTH0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SPRING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE SECONDARY WASHER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE STAND-OFF
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHER
MATERIAL ACCOMMODATED THICKNESS0.063 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
THREAD LENGTH0.170 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE SECONDARY WASHER
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 2
841581-226Reference document
Same NSN cross-reference
Reference document — Secondary reference
DSC7900-6-B-3.5Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 841581-26?
841581-26 is a SCREW ASSEMBLY,PANEL.
What parts can replace 841581-26?
There are 2 known substitutes for 841581-26: 841581-226, DSC7900-6-B-3.5. Substitute compatibility should be verified for your specific system.
What is the NSN for 841581-26?
841581-26 is cataloged in the U.S. Government catalog under NSN 5305-01-334-6656. 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.