SCREW,CAP,SOCKET HEAD
Price to win
From deduped DIBBS award lines (unit cost × quantity). Not a bid recommendation — observed history only.
Average unit cost
$0.90
Weighted average
$0.82
Weighted by quantity
Observed range
$0.70–$2.40
Coverage
20 awards
Sep 22, 2009 – Oct 27, 2025
Average: $0.90 · Weighted avg: $0.82 · Range: $0.70–$2.40 · Based on 20 awards, Sep 22, 2009–Oct 27, 2025.
Unit cost by award date · 20 priced lines
DIBBS award history
Distinct award lines for this NSN (deduped). Line total is unit cost × quantity.
20 distinct award lines
| Date | Manufacturer | Qty × unit | Total | Contract |
|---|---|---|---|---|
| Oct 27, 2025 | 1DN91STANDARD AERO PARTS, INCMOORPARK, CASAM | 848 × $1.22 | $1,035 | SPE4A626V1867 |
| Mar 28, 2025 | 55345ALAMO AIRCRAFT, LTD.SAN ANTONIO, TXSAM | 1,349 × $0.83 | $1,120 | SPE4A625V096Z |
| Feb 22, 2024 | 2N935BOEING DISTRIBUTION SERVICES X, INC.HIALEAH, FLSAM | 218 × $1.50 | $327 | SPE4A624V9587 |
| Oct 19, 2023 | 1DN91STANDARD AERO PARTS, INCMOORPARK, CASAM | 424 × $0.79 | $335 | SPE4A624V0989 |
| Jul 20, 2023 | 55345ALAMO AIRCRAFT, LTD.SAN ANTONIO, TXSAM | 326 × $0.84 | $274 | SPE4A623V408G |
| Apr 20, 2023 | 1DN91STANDARD AERO PARTS, INCMOORPARK, CASAM | 842 × $0.74 | $623 | SPE4A623V155R |
| Aug 16, 2021 | 1DN91STANDARD AERO PARTS, INCMOORPARK, CASAM | 1,692 × $0.80 | $1,347 | SPE4A621V669H |
| Feb 8, 2018 | 1DN91STANDARD AERO PARTS, INCMOORPARK, CASAM | 1,881 × $0.75 | $1,411 | SPE5E218V4126 |
| Jul 1, 2015 | 1DN91STANDARD AERO PARTS, INCMOORPARK, CASAM | 1,840 × $0.70 | $1,288 | SPM5EY12D00030144 |
| May 14, 2015 | 1DN91STANDARD AERO PARTS, INCMOORPARK, CASAM | 685 × $0.73 | $500 | SPM5EY12D00030131 |
| Apr 3, 2014 | 1DN91STANDARD AERO PARTS, INCMOORPARK, CASAM | 1,013 × $0.72 | $729 | SPM5EY12D00030072 |
| Feb 4, 2014 | 1DN91STANDARD AERO PARTS, INCMOORPARK, CASAM | 341 × $0.72 | $246 | SPM5EY12D00030060 |
| Jul 29, 2011 | 55345ALAMO AIRCRAFT, LTD.SAN ANTONIO, TXSAM | 2,250 × $0.76 | $1,710 | SPM5AY10D00800004 |
| Jul 29, 2011 | 55345ALAMO AIRCRAFT, LTD.SAN ANTONIO, TXSAM | 134 × $0.76 | $102 | SPM5AY10D00800003 |
| Apr 15, 2011 | 55345ALAMO AIRCRAFT, LTD.SAN ANTONIO, TXSAM | 325 × $0.76 | $247 | SPM5AY10D0080000201 |
Manufacturers who have won this NSN
Distinct CAGEs with a confirmed DIBBS award line for this part — each opens the manufacturer page.
Approved manufacturers
Qualified to supply per MCRL — no confirmed DIBBS award on record for this NSN. Each CAGE opens the manufacturer page.
PN MS21091-08018
Characteristics
FLIS item characteristics from PUB LOG identification.
| Characteristic | Value |
|---|---|
| COUNTERSINK ANGLE | DEGREES MINIMUM 99.0 AND DEGREES MAXIMUM 101.0 |
| FASTENER LENGTH | INCHES MINIMUM 1.547 AND INCHES MAXIMUM 1.593 |
| HARDNESS RATING | OVERALL ROCKWELL C MINIMUM 26.0 AND ROCKWELL C MAXIMUM 32.0 |
| HEAD DIAMETER | INCHES MINIMUM 0.283 AND INCHES MAXIMUM 0.332 |
| LOCKING FEATURE | THREADS STRIP OR PELLET OR PATCH |
| MATERIAL | OVERALL STEEL COMP 4037 OR STEEL COMP 8630 |
| MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD 1ST MATERIAL RESPONSE A-S6300 OR MIL SPEC 2ND MATERIAL RESPONSE -IL-S-6050 |
| MINIMUM TENSILE STRENGTH | POUNDS PER SQUARE INCH 125000 |
| NOMINAL THREAD DIAMETER | INCHES 0.164 |
| SURFACE TREATMENT | OVERALL CADMIUM AND CHROMATE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416,TY 2,CL 3 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | INCHES MINIMUM 0.412 AND INCHES MAXIMUM 0.478 |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
Open buys
DIBBS · quotes by Sep 28, 2026 · UNRESTRICTED