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2145231-1 — THUMBSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2145231-1: THUMBSCREW.

The THUMBSCREW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, head_style: KNURLED NO. 1, head_height: 0.750 INCHES NOMINAL IN, point_style: CHAMFER DOG, point_length: 0.531 INCHES NOMINAL IN, thread_class: 3A A.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-026-6873, 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
2145231-1
NSN: 5305-01-026-6873
FSC: 5305 — Screws
CAGE: 55974 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS FORMER TEST SYSTEMS DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
head_styleKNURLED NO. 1
head_height0.750 INCHES NOMINAL IN
point_styleCHAMFER DOG
point_length0.531 INCHES NOMINAL IN
thread_class3A A
head_diameter0.625 INCHES NOMINAL IN
thread_length1.250 INCHES NOMINAL IN
point_diameter0.187 INCHES NOMINAL IN
fastener_length1.781 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentTIN OVERALL
NSN5305-01-026-6873
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2145231-1 · 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
•
POINT DIAMETER: 0.187 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.750 INCHES NOMINAL IN
•
POINT LENGTH: 0.531 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.781 INCHES NOMINAL IN
•
THREAD LENGTH: 1.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626 COMP 22 1/2H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
POINT CHAMFER ANGLE: 90.0 DEGREES NOMINAL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
POINT DIAMETER0.187 INCHES NOMINAL IN
HEAD HEIGHT0.750 INCHES NOMINAL IN
POINT LENGTH0.531 INCHES NOMINAL IN
FASTENER LENGTH1.781 INCHES NOMINAL IN
THREAD LENGTH1.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626 COMP 22 1/2H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
POINT CHAMFER ANGLE90.0 DEGREES NOMINAL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEKNURLED NO. 1
THREAD DIRECTIONRIGHT-HAND
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

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 2145231-1?
2145231-1 is a THUMBSCREW.
What is the NSN for 2145231-1?
2145231-1 is cataloged in the U.S. Government catalog under NSN 5305-01-026-6873. 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.