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FULL THREAD STUDS

FULL THREAD STUDS

Full thread studs are made by cutting all thread rod to length or roll-threading pitch diameter cut blanks. One important consideration in ordering full useable thread studs is specifying the length. There are two standards. One is measuring the overall length of the part (this is how we typically supply our studs full-form). The other is measuring from the first full-form useable thread on one end to the first full thread on the other. As studs are generally chamfered on both ends, the first-to-first measurement will be 1 to 2 pitches less than the overall. First-to-first measurements are usually specified in high temperature and high pressure applications, particularly where ASTM A193 is specified.

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Specifications & Technical Data

Dimensions

Nominal Size Diameter, D Threads Per Inch Umax = 2 Thread Pitches = 2P
UNC UNF 8UN UNC Threads UNF Threads 8UN Threads
1/4 0.2500 20 28 — 0.100 0.071 —
5/16 0.3125 18 24 — 0.111 0.083 —
3/8 0.3750 16 24 — 0.125 0.083 —
7/16 0.4375 14 20 — 0.143 0.100 —
1/2 0.5000 13 20 — 0.154 0.100 —
9/16 0.5625 12 18 — 0.167 0.111 —
5/8 0.6250 11 18 — 0.182 0.111 —
3/4 0.7500 10 16 — 0.200 0.125 —
7/8 0.8750 9 14 — 0.222 0.143 —
1 1.0000 8 12 — 0.250 0.167 —
1 1/8 1.1250 7 12 8 0.286 0.167 0.250
1 1/4 1.2500 7 12 8 0.286 0.167 0.250
1 3/8 1.3750 6 12 8 0.333 0.167 0.250
1 1/2 1.5000 6 12 8 0.333 0.167 0.250
1 5/8 1.6250 — — 8 — — 0.250
1 3/4 0.1750 5 — 8 0.400 — 0.250
1 7/8 1.8750 — — 8 — — 0.250
2 2.0000 4 1/2 — 8 0.444 — 0.250
2 1/4 2.2500 4 1/2 — 8 0.444 — 0.250
2 1/2 2.5000 4 — 8 0.500 — 0.250
2 3/4 2.7500 4 — 8 0.500 — 0.250
3 3.0000 4 — 8 0.500 — 0.250
3 1/4 3.2500 4 — 8 0.500 — 0.250
3 1/2 3.5000 4 — 8 0.500 — 0.250
3 3/4 3.7500 4 — 8 0.500 — 0.250
4 4.0000 4 — 8 0.500 — 0.250

 

Full Thread Studs Specifications

  • STANDARD (ASME/ANSI)
  • METRIC (IFI)
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FULL THREAD STUDS Available Materials

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Industries We Serve

Nickel Systems provides high quality exotic grade materials that hold up in the toughest, most severe heat and corrosive environments. With our large inventory of specialty fasteners in stock, we are always ready to answer the call to serve the most challenging applications.

Nickel Systems stocks all thread rod in Hastelloy® C276 (Alloy C276), Carpenter® 20 (Alloy 20), Duplex 2205, 316 Stainless and 18-8 Stainless, which can be cut to length and shipped in short order. We can also supply studs to A193 specs (B8, B8C, B8M, B8R, B8S, B8T), Monel® (Alloy 400, Alloy 500), AL6XN®, Nitronic® (50 and 60) and other non ferrous materials.

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