Part Number
Hexagon Head Cap Screw · Military specification (MIL series) · 15 stocked variants
Reading the part number. MIL-DTL-1222 cites military specification MIL-DTL-1222. A spec citation covers every item made to that document, so the NSN — not the spec number — is what uniquely identifies this hexagon head cap screw; the cross-referenced stock number below is the exact item.
Because MIL-DTL-1222 is a specification-level reference, each conforming variant carries its own National Stock Number. The table below lists every variant we stock, with its decoded characteristics and published price — open the NSN record to see the full specification and order that exact item.
| NSN | Item | Key characteristics | Unit price |
|---|---|---|---|
| 5305-01-226-5928 | Hexagon Head Cap Screw | Fastener Length: 0.970 Inches Minimum And 1.020 Inches Maximum; Head Style: Hexagon | $2.62 |
| 5305-01-367-9828 | Hexagon Head Cap Screw | Fastener Length: 2.750 Inches Nominal; Head Style: Hexagon | $35.04 |
| 5305-01-371-9849 | Hexagon Head Cap Screw | Fastener Length: 2.250 Inches Nominal; Hardness Rating: 95.0 Rockwell B Maximum Overall | $15.42 |
| 5305-01-385-9820 | Socket Head Cap Screw | Fastener Length: 6.250 Inches Nominal; Head Style: Flat Chamfer | $350.46 |
| 5305-01-412-4892 | Hexagon Head Cap Screw | Fastener Length: 1.940 Inches Minimum And 2.000 Inches Maximum; Hardness Rating: 24.0 Rockwell C Minimum Fastener And 35.0 Rockwell C Maximum Fastener | $35.04 |
| 5305-01-413-6582 | Socket Head Cap Screw | Fastener Length: 1.750 Inches Nominal; Hardness Rating: 24.0 Rockwell C Minimum Fastener And 35.0 Rockwell C Maximum Fastener | $70.09 |
| 5305-01-416-1310 | Socket Head Cap Screw | Fastener Length: 5.000 Inches Nominal; Hardness Rating: 24.0 Rockwell C Nominal Overall | $350.46 |
| 5305-01-498-3671 | Hexagon Head Cap Screw | Fastener Length: 2.940 Inches Minimum And 3.040 Inches Maximum; Head Style: Hexagon | $17.52 |
| 5305-01-515-6783 | Socket Head Cap Screw | — | $300.00 |
| 5306-00-903-3535 | Continuous Thread Rod | Hardness Rating: 25.0 Rockwell C Minimum And 34.0 Rockwell C Maximum; Material: Steel Comp 4140 Or Steel Comp 4142 Or Steel Comp 4145 | $35.04 |
| 5306-00-903-3538 | Continuous Thread Rod | Hardness Rating: 25.0 Rockwell C Minimum And 34.0 Rockwell C Maximum; Material: Steel Comp 4140 Or Steel Comp 4142 Or Steel Comp 4145 | $61.34 |
| 5306-00-903-3543 | Continuous Thread Rod | Hardness Rating: 25.0 Rockwell C Minimum And 34.0 Rockwell C Maximum; Material: Steel Comp 4140 Or Steel Comp 4142 Or Steel Comp 4145 | $508.17 |
| 5306-01-199-1407 | Continuous Thread Rod | Material: Steel Comp 1008 Or Steel Comp 1010 Or Steel Comp 1015 Or Steel Comp 1016 Or Steel Comp 1018 Or Steel Comp 1020 Or Steel Comp 1022 Or Steel Comp 1025 Or Steel Comp 1030 Or Steel Comp 1035 Or Steel Comp 1040 Or Steel Comp 1045 Or Steel Comp 1050 Or Steel Comp 1095 Or Steel Comp 1117 Or Steel Comp 1118 Or Steel Comp 1137 Or Steel Comp 1141 Or Steel Comp 1144 Or Steel Comp 1151 Or Steel Comp 1211 Or Steel Comp 1212 Or Steel Comp 1213 Or Steel Comp 1215; Overall Length: 120.000 Inches Nominal | $700.92 |
| 5306-01-441-9208 | Machine Bolt | Fastener Length: 2.500 Inches Nominal; Hardness Rating: 80.0 Rockwell B Minimum Fastener | $613.31 |
| 5310-01-452-2899 | Hexagon Plain Nut | Material: Nickel Alloy 400 Overall; Thread Quantity Per Inch: 11 | $35.04 |
Country of origin: Türkiye (Turkey) — a DFARS qualifying country. Türkiye is a NATO ally with a reciprocal defense procurement agreement with the U.S. Department of Defense, making it a qualifying country under DFARS 225.003. On DoD and DLA solicitations, qualifying-country end products are evaluated without Buy American price penalties — they compete on par with domestic product — and DoD trade-agreements clauses (DFARS 252.225-7021) expressly accept qualifying-country end products.
Dollar thresholds. The Trade Agreements Act only applies to supply contracts at or above $174,000 (the WTO GPA threshold effective March 2026); below that — where the vast majority of hardware buys fall — the TAA does not apply at all. The main exclusion is civilian-agency solicitations at or above that threshold that restrict award to TAA designated-country products (Türkiye is not TAA-designated). Buyers are responsible for confirming the origin requirements of their specific solicitation.
Full country-of-origin and source documentation is provided with every order. Fulfillment within 90 days of order. Minimum order may apply.
Items are supplied as stock mil-spec / commercial hardware with source documentation and country-of-origin paperwork on every order. Parts are not supplied with an FAA Form 8130-3 airworthiness tag unless expressly stated on the quote. Buyers installing hardware on certificated aircraft are responsible for acceptance under their own maintenance program, repair station procedures, or owner/operator authority.
