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377-SS-20 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

377-SS-20: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: KNURLED NO. 5, head_height: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, point_style: CONE, point_length: 0.063 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN, thread_class: 2A A.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-398-4039, 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
377-SS-20
NSN: 5305-01-398-4039
FSC: 5305 — Screws
CAGE: 55566 — MATTHEW WARREN, INC DBA RAF ELECTRONIC HARDWARE DIV RAF ELECTRONIC HARDWARE, LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleKNURLED NO. 5
head_height0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
point_styleCONE
point_length0.063 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.250 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
thread_length0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
point_diameter0.068 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
fastener_length0.985 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
NSN5305-01-398-4039
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 377-SS-20 · 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
•
POINT DIAMETER: 0.068 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
POINT LENGTH: 0.063 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.985 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A581 ASSN STD ALL MATERIAL RESPONSES OR ASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
POINT CHAMFER ANGLE: 90.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM
TECHNICAL CHARACTERISTICS
POINT DIAMETER0.068 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN
HEAD HEIGHT0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
POINT LENGTH0.063 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
FASTENER LENGTH0.985 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.110 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A581 ASSN STD ALL MATERIAL RESPONSES OR ASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL
POINT CHAMFER ANGLE90.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM
NOMINAL THREAD DIAMETER0.112 INCHES IN
HEAD STYLEKNURLED NO. 5
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 377-SS-20?
377-SS-20 is a SETSCREW.
What is the NSN for 377-SS-20?
377-SS-20 is cataloged in the U.S. Government catalog under NSN 5305-01-398-4039. 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.