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421550 — CABLE ASSEMBLY,SPECIAL PURPOSE,E

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

421550: CABLE ASSEMBLY,SPECIAL PURPOSE,E.

CABLE ASSEMBLY,SPECIAL PURPOSE,E. Key specifications include head_style: ROUND, head_height: 0.059 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.146 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN, thread_length: 0.089 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, fastener_length: 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-285-4577, 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
421550
NSN: 5305-00-285-4577
NIINs: 002854577, 016086302
FSC: 5305 — Screws
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
head_styleROUND
head_height0.059 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.146 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN
thread_length0.089 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
fastener_length0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
special_features6 FT USB CABLE; FOR USE WITH QBC AUTOREAD PLUS ANALYZER FT
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.086 INCHES IN
screw_surface_treatmentCADMIUM OR ZINC
thread_quantity_per_inch56
NSN5305-00-285-4577
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 421550 · 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: 0.059 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: CADMIUM OR ZINC
•
FASTENER LENGTH: 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.089 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.086 INCHES IN
•
HEAD STYLE: ROUND
•
THREAD DIRECTION: RIGHT-HAND
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
TYPICAL APPLICATIONS
  • Server Internal Cabling
  • Data Center Cable Infrastructure
  • SAS/SATA Drive Connectivity
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.059 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTCADMIUM OR ZINC
FASTENER LENGTH0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
THREAD LENGTH0.089 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.086 INCHES IN
HEAD STYLEROUND
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
THREAD CLASS2A A
THREAD QUANTITY PER INCH56
SUBSTITUTES & CROSS-REFERENCES 1
FFS92TYPE1STYLE1SReference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 421550?
421550 is a CABLE ASSEMBLY,SPECIAL PURPOSE,E.
What parts can replace 421550?
There is 1 known substitute for 421550: FFS92TYPE1STYLE1S. Substitute compatibility should be verified for your specific system.
What is the NSN for 421550?
421550 is cataloged in the U.S. Government catalog under NSN 5305-00-285-4577. 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.