NSN catalog · 90,963 partsCatalog › Hardware and Abrasives › FSC 5305 › 5305-00-071-2056
Cap Hexagon Head Screw P/N B1821BH044C175N
In stock — 348 on our U.S. shelfNSN 5305-00-071-2056 5305000712056 NIIN 000712056
SECO Parts has 348 in stock of NSN 5305-00-071-2056 — Cap Hexagon 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,HEXAGON HEAD
- SECO description
- SCREW, CAP HEX
- Federal supply class
- FSC 5305 — Screws
- Used on
- Aircraft,C-2A(Reprocured); Helicopter MH-53E; Helicopter,Advance Attack; Generator Set,Diesel Engine; Decontaminating Apparatus; Helicopter,Carrier Based Asw; Helicopter USCG; Crane (RT41AA); NSN Fire Fighting Truck (4210-01-486-1035) Tfft (Tactical Fire Fighting Truck); Medium Mine Protected Vehicl
Availability & condition
| Condition | Code | Qty on shelf |
|---|---|---|
| New Surplus | NS | 348 |
| Total | 348 |
Quantities are live from SECO's inventory system, not estimated.
Also known as:
5305-00-071-2056 000712056 B1821BH044C175N 71145-90 MS90728-90 180151 326-1008-000 MS35297-90
In the parts manual
| Manual | Figure | Item | Fits |
|---|---|---|---|
| TM 9-2320-280-24P | Fig. 389 — Seat Support Assemblies and Mounting Hardware | 3 | HMMWV: M998, M998A1, M1038, M1038A1 |
| TM 9-2320-280-24P | Fig. 393 — Mounting Plates and Ventilator Exhaust Ducting | 3 | HMMWV: M998, M998A1, M1038, M1038A1 |
| TM 9-2320-280-24P | Fig. 395 — Top Cover Assembly and Mounting Hardware | 14 | HMMWV: M998, M998A1, M1038, M1038A1 |
From the Army repair parts manual's parts list and its usable-on codes. The figure page shows the exploded drawing and every other part in the assembly.
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
- Head height
- 0.272–0.291 in
- Surface finish
- Threads Microinches 63.0
- Material
- Overall Steel
- Material document and classification
- Overall Assn STD Single Material Response SAE J429 Grade 8 or Assn STD Single Material Response Ast- A354 Grade BD
- Surface treatment
- Overall Zinc and Chromate
- Surface treatment document and classification
- Overall Assn STD Single Treatment Response Ast- B633 TY 2 SC 3
- Thread series designator
- Unified National Coarse (UNC)
- Thread class
- 2A
- Width between flats
- 0.612–0.625 in
- Thread length
- 1.125–1.312 in
- Fastener length
- 1.688–1.750 in
- Minimum tensile strength
- Pounds Per Square Inch 150000
- Thread direction
- Right-Hand
- Thread quantity per inch
- 14
- Nominal thread diameter
- Inches 0.438
From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.
Cross-reference part numbers
B1821BH044C175N 71145-90 MS90728-90
Also referenced as
180151 326-1008-000 MS35297-90
Older, superseded, advisory or drawing numbers the federal catalog associates with this NSN — the ones in an old manual. They find the item; confirm the current part number when you order.
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 348 on the shelf |
| Unit of issue | PG package |
| 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.
In business since 1951 · 30,000+ contracts completed · about SECO & our policies · more questions answered
FAQ
What is NSN 5305-00-071-2056?
NSN 5305-00-071-2056 (5305000712056) — Cap Hexagon Head Screw: SECO Parts has 348 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for cap hexagon head screw in federal supply class 5305 (Screws).
Is NSN 5305-00-071-2056 available?
SECO Parts has 348 in stock in Augusta, GA — order or request a quote below.
How much does NSN 5305-00-071-2056 cost?
SECO quotes NSN 5305-00-071-2056 on request, usually the same business day.
What does NSN 5305-00-071-2056 fit?
The federal catalog lists NSN 5305-00-071-2056 as used on: Aircraft,C-2A(Reprocured); Helicopter MH-53E; Helicopter,Advance Attack; Generator Set,Diesel Engine; Decontaminating Apparatus; Helicopter,Carrier Based Asw; Helicopter USCG; Crane (RT41AA); NSN Fire Fighting Truck (4210-01-486-1035) Tfft (Tactical Fire Fighting Truck); Medium Mine Protected Vehicl.
What part numbers cross-reference to NSN 5305-00-071-2056?
Part numbers that cross-reference this NSN include B1821BH044C175N, 71145-90, MS90728-90. It is also referenced by older, superseded or advisory numbers: 180151, 326-1008-000, MS35297-90. SECO can quote against any of them.
Same item, other stock numbers
Other NSNs the federal catalog names SCREW,CAP,HEXAGON HEAD. Same name is not the same part: check the part numbers.