Stainless steel round bar sizes (304): 1/8 to 12 in diameter with weight per foot; flat bar thickness and width ranges — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/stainless-steel-round-and-flat-bar-sizes/ (sheet CC BY 4.0) Basis: Metals Depot 304 round bar list (33 sizes with weights), Remington round and flat bar options, Shaw Stainless ranges for flat and round Catalog version: 2026-10-20 Sizes: see table below - Stainless round bar (304, also 316 and 303 at other distributors) comes in inch diameters in 1/16 to 1/8 in steps below 2 in and larger steps above. Metals Depot lists 33 diameters from 1/8 to 12 in for 304 (10 and 12 in as 304/304L); Remington Industries lists 8 round rod diameters (1/4 to 2 in in 1/4 in steps), every one of which is also on the Metals Depot list. Shaw Stainless & Alloy's page gives only a range, 1/8 to 20 in, in 303 / 304 / 316 / 17-4PH. - Weights are Metals Depot's printed lb/ft, shown from 1/2 in up, where each agrees within 4 % with a density of 7.9 g/cm³ (304) computed from the diameter (a sanity check, not additional data). Below 1/2 in the printed values (1/8: 0.05, 3/16: 0.11, 1/4: 0.18, 5/16: 0.29, 3/8: 0.42, 7/16: 0.57) are 7 to 19 % above that computed value, so they are not used. 316 round bar was not listed on the pages read, so no 316 sizes are claimed. - Flat bar: Remington's configurator options are thickness 1/4, 1/2 and 1 in, width 1/2, 1, 2, 3 and 4 in (which of these combinations are stocked is not stated, so no size table is claimed). Shaw's stainless flat bar range is thickness 1/8 to 3 in and width 1/2 to 8 in, grades 303 / 304 / 316 / 17-4PH. A distributor's complete flat bar list (thickness × width) was not read. - Sheet and plate: the existing sheet-metal gauge page covers 10 to 20 gauge stainless sheet; stainless plate sizes were not read. No STEP/STL: bar stock is a plain cylinder or box. round bar diameter mm weight, lb/ft (Metals Depot, 304) also on Remington's list 1/8 in 3.17 — (see notes) — 3/16 in 4.76 — (see notes) — 1/4 in 6.35 — (see notes) yes 5/16 in 7.94 — (see notes) — 3/8 in 9.52 — (see notes) — 7/16 in 11.11 — (see notes) — 1/2 in 12.70 0.67 yes 9/16 in 14.29 0.85 — 5/8 in 15.88 1.05 — 11/16 in 17.46 1.26 — 3/4 in 19.05 1.51 yes 7/8 in 22.22 2.1 — 1 in 25.40 2.7 yes 1-1/8 in 28.57 3.4 — 1-3/16 in 30.16 3.8 — 1-1/4 in 31.75 4.18 yes 1-3/8 in 34.92 5.2 — 1-1/2 in 38.10 6.01 yes 1-5/8 in 41.27 7.05 — 1-3/4 in 44.45 8.18 yes 1-7/8 in 47.62 9.39 — 2 in 50.80 10.68 yes 2-1/4 in 57.15 13.7 — 2-1/2 in 63.50 16.69 — 2-3/4 in 69.85 20.2 — 3 in 76.20 24.04 — 3-1/2 in 88.90 33.15 — 4 in 101.60 43.39 — 5 in 127.00 67.8 — 6 in 152.40 98.15 — 8 in 203.20 174.25 — 10 in 254.00 278.13 — 12 in 304.80 398.66 — Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Metals Depot: Stainless steel round bar 304: diameter and weight per foot, 1/8 to 12 in — web — Publisher's page; dimensions are facts — https://www.metalsdepot.com/stainless-steel-products/stainless-steel-round - Remington Industries: Stainless steel dimensions: round rod diameters, flat bar thickness and width options — web — Publisher's page; dimensions are facts — https://www.remingtonindustries.com/resources/stainless-steel-dimensions/ - Shaw Stainless & Alloy (via Plant Automation Technology): Stainless flat bar: thickness 1/8 to 3 in, width 1/2 to 8 in, grades 303 / 304 / 316 / 17-4PH — web — Publisher's page; dimensions are facts — https://plantautomation-technology.com/products/shaw-stainless-alloy/stainless-steel-flat-bar - Shaw Stainless & Alloy (via Plant Automation Technology): Stainless round bar: 1/8 to 20 in, grades 303 / 304 / 316 / 17-4PH — web — Publisher's page; dimensions are facts — https://plantautomation-technology.com/products/shaw-stainless-alloy/stainless-steel-round-bar No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned. API: https://xemstudio.com/api/geometry?object=stainless-steel-round-and-flat-bar-sizes