PartsTable
Technical Data Sheet
Download PDF

186840-1 — INSERT,SCREW THREAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

186840-1: INSERT,SCREW THREAD.

The INSERT,SCREW THREAD is a the manufacturer industrial component. Key specifications include length: 0.600 INCHES NOMINAL IN, insert_size: 0.500-28 UNEF-2A A, thread_class: 2B, flange_diameter: 0.560 INCHES NOMINAL IN, flange_thickness: 0.120 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-283-0571, 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
186840-1
NSN: 5325-01-283-0571
FSC: 5325 — Fastening Devices
CAGE: 37695 — RAYTHEON COMPANY (USA)
SPECIFICATIONS
length0.600 INCHES NOMINAL IN
insert_size0.500-28 UNEF-2A A
thread_class2B
flange_diameter0.560 INCHES NOMINAL IN
flange_thickness0.120 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.190 INCHES IN
second_flange_thickness0.420 INCHES NOMINAL IN
thread_quantity_per_inch32
thread_series_designatorUNF
surface_treatment_document_and_classificationQQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-01-283-0571
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 186840-1 · 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
•
FLANGE DIAMETER: 0.560 INCHES NOMINAL IN
•
SECOND FLANGE THICKNESS: 0.420 INCHES NOMINAL IN
•
LENGTH: 0.600 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
FLANGE THICKNESS: 0.120 INCHES NOMINAL IN
•
INSERT SIZE: 0.500-28 UNEF-2A A
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER0.560 INCHES NOMINAL IN
SECOND FLANGE THICKNESS0.420 INCHES NOMINAL IN
LENGTH0.600 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
FLANGE THICKNESS0.120 INCHES NOMINAL IN
INSERT SIZE0.500-28 UNEF-2A A
NOMINAL THREAD SIZE0.190 INCHES IN
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2B
THREAD QUANTITY PER INCH32
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
Ready to buy 186840-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 186840-1?
186840-1 is a INSERT,SCREW THREAD.
What is the NSN for 186840-1?
186840-1 is cataloged in the U.S. Government catalog under NSN 5325-01-283-0571. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 186840-1

✓ 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.