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427531-1 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

427531-1: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OR STEEL COMP E4340 OVERALL, head_style: FILLISTER, head_height: 0.125 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 1.000 INCHES NOMINAL IN, thread_length: 0.707 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-352-8462, 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
427531-1
NSN: 5305-01-352-8462
FSC: 5305 — Screws
CAGE: 80020 — NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION JOINT BASE JBMDL (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OR STEEL COMP E4340 OVERALL
head_styleFILLISTER
head_height0.125 INCHES NOMINAL IN
thread_class2A A
head_diameter1.000 INCHES NOMINAL IN
thread_length0.707 INCHES NOMINAL IN
fastener_length0.875 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats0.312 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.562 INCHES IN
thread_quantity_per_inch12
NSN5305-01-352-8462
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 427531-1 · 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
•
WIDTH ACROSS FLATS: 0.312 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.125 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.875 INCHES NOMINAL IN
•
THREAD LENGTH: 0.707 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.562 INCHES IN
•
HEAD STYLE: FILLISTER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.312 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
HEAD HEIGHT0.125 INCHES NOMINAL IN
FASTENER LENGTH0.875 INCHES NOMINAL IN
THREAD LENGTH0.707 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.562 INCHES IN
HEAD STYLEFILLISTER
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLEHEXAGON
THREAD CLASS2A A
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 427531-1?
427531-1 is a SCREW,CAP,SOCKET HEAD.
What is the NSN for 427531-1?
427531-1 is cataloged in the U.S. Government catalog under NSN 5305-01-352-8462. This indicates validated use in U.S. government and defense supply chains.
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