NSN catalog · 90,857 partsCatalog › Hardware and Abrasives › FSC 5305 › 5305-01-321-9731
Cap Socket Head Screw P/N 1/2-13UNC-3A 2 3/4 IN. LG
In stock — 6 on our U.S. shelfNSN 5305-01-321-9731 5305013219731 NIIN 013219731
SECO Parts has 6 in stock of NSN 5305-01-321-9731 — Cap Socket Head Screw — on our own shelf in Augusta, GA: a stocking supplier, not a broker.
One part, one step — answered within one business day. Several parts? and send them together.
- Ships in 1–3 business days from Augusta, GA
- Certificate of Conformance on request
- PO, GPC & major cards
- $50 minimum order — smaller requests still get a quote
- 30-day returns · terms
- FLIS item name
- SCREW,CAP,SOCKET HEAD
- Federal supply class
- FSC 5305 — Screws
Availability & condition
| Condition | Code | Qty on shelf |
|---|---|---|
| New Surplus | NS | 6 |
| Total | 6 |
Quantities are live from SECO's inventory system, not estimated.
Also known as:
5305-01-321-9731 013219731 1/2-13UNC-3A 2 3/4 IN. LG
Get a quote
Build a list across as many parts as you need, send it once, get one quote back — answered within one business day, usually the same day. POs and GPC welcome. $50 minimum order.
More to tell us? Need-by date, ship-to, your own RFQ document
Specifications
- Thread class
- 3A
- Thread direction
- Right-Hand
- Thread length
- 1.500–2.380 in
- Fastener length
- 2.750 in (nominal)
- Head diameter
- 0.872–0.938 in
- Nominal thread diameter
- Inches 0.500
- Width across flats
- 0.312 in (nominal)
- Thread quantity per inch
- 13
- Countersink angle
- 80.0–84.0 °
- Material
- Overall Nickel Alloy 400 or Nickel Alloy R-405
- Material document and classification
- Overall Fed Spec All Material Responses QQ-N-281
- Thread series designator
- Unified National Coarse (UNC)
- Nondefinitive spec/std data
- Type 4
From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.
Cross-reference part numbers
1/2-13UNC-3A 2 3/4 IN. LG
Shown for identification only. SECO can quote against any of these numbers.
Logistics data
| Source of supply | SMS DLA Land and Maritime, Columbus, Ohio |
| Acquisition advice code | Z Insurance/numeric stockage objective — held by the government as insurance stock for contingencies, not for routine issue. SECO has 6 on the shelf |
| Unit of issue | EA each |
| Demilitarization code | A Demilitarization not required — non-munitions-list item |
| Controlled inventory code | U Unclassified |
| Hazardous material indicator | N No hazardous material |
Source: public FLIS/PUB LOG cataloging data.
Why buy from SECO
These quantities sit on our own shelves — we are a stocking supplier, not a broker sourcing after you order. Condition-coded stock, formal quotes with NSN/PN on the paperwork, POs and GPC welcome, fast U.S. shipping.
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FAQ
What is NSN 5305-01-321-9731?
NSN 5305-01-321-9731 (5305013219731) — Cap Socket Head Screw: SECO Parts has 6 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for cap socket head screw in federal supply class 5305 (Screws).
Is NSN 5305-01-321-9731 available?
SECO Parts has 6 in stock in Augusta, GA — order or request a quote below.
How much does NSN 5305-01-321-9731 cost?
SECO lists NSN 5305-01-321-9731 at $122.99 on its online store for card checkout; request a quote for quantity or to buy on a purchase order.
What part numbers cross-reference to NSN 5305-01-321-9731?
Part numbers that cross-reference this NSN include 1/2-13UNC-3A 2 3/4 IN. LG. SECO can quote against any of them.
Same item, other stock numbers
Other NSNs the federal catalog names SCREW,CAP,SOCKET HEAD. Same name is not the same part: check the part numbers.