Counterbore hole dimensions chart 1 Dimensions All dimensions in millimetres. Clearance dia. For example, a JIS M8 pan head bolt with a normal fit counterbored hole will require a pilot hole diameter of 9 mm, a counterbore diameter of 18 mm, and a counterbore depth of 6. In the example below, the drawing calls out five thru holes of a diameter between 0. metric socket-head cap screws: screw dia: counterbore dia: counterbore depth: countersink dia: clearance dia (normal fit) clearance dia (close fit) m1,6: 3,50mm metric socket-head cap screws: screw dia: counterbore dia: counterbore depth: countersink dia: clearance dia (normal fit) clearance dia (close fit) m1,6: 3,50mm Approx. 70mm M3 6. Counterbore Dimensions Size Chart for recommended standard clearance and counterbore hole sizes for metric socket head cap screws from M1. 00mm 2. Oct 31, 2022 · For example, a DIN 7984 M8 socket cap head bolt with a normal fit counterbored hole will require a pilot hole diameter of 9 mm, a counterbore diameter of 15 mm, and a counterbore depth of 5. Note 1: X - Counterbore Diameter, Y - Countersink Diameter, H - Counterbore Depth / Max. Nov 29, 2022 · Use the image and chart below to determine what dimensions to use, all dimensions are in millimetres. It lists the screw diameter, counterbore diameter, counterbore depth, countersink diameter, and clearance diameters for both normal and close fits for screw sizes from M1. For example, an ANSI Inch 2″ socket cap head bolt with a normal fit counterbored hole will require a pilot hole diameter of 2 1/8″, a counterbore diameter of 3 1/8″, and a counterbore depth of 2 1/16″. 75 M 30 X 3. . 073: 0. 3 Type C 3. The dimensions for various types and sizes of fasteners are listed in a table showing the counterbore's metric or imperial dimensions. 520 to 0. Head Height for Socket Head Cap Screw . COUNTERBORE DIAMETER 0. 1mm 3. 5 mm, a counterbore diameter of 24 mm, and a counterbore depth of 15 mm. Head Height for Socket Head Cap Screw . (close fit) #0: 1/8 counterbore size chart; inch cap screw counterbore diameter counterbore depth screw size hole size counterbore diameter counterbore depth; 0: 0. 5 mm, a counterbore diameter of 8 mm, and a counterbore depth of 4. Nov 29, 2022 · Use the image and chart below to determine what dimensions to use, all dimensions are in inches. Counterbore Hole Size Chart for Low Socket Cap Head Fasteners (DIN 7984) This document provides dimensions for counterbored holes for metric socket-head cap screws. 6 mm, a counterbore diameter of 11 mm, and a counterbore depth of 6. For instance, an ANSI Metric M2 socket cap head bolt with a normal fit counterbored hole requires a pilot hole diameter of 2. 8 mm. 005 M 4 X . mm Counterbore Dia. There are two classes of fit category; close- and normal-fit category. Supplements: Thread calculators and charts; Counterbore Hole Dimensions for Socket Head Cap Screws Calculator; Reference: 1. 5 mm. 546, each with a counterbore having a diameter of 0. 70 M 12 X 1. 540. 5 COUNTERBORE DEPTH 0. mm Countersink Dia. 0mm 1. USA SOCKET-HEAD CAP SCREWS: Screw dia. Countersink in CNC Drilling: Differences in Symbol, Shape, Size, Tool, Application Types of Holes in Engineering Drawing & Hole Machining Operations Bolts Types and Sizes: Metric & Imperial Bolt Dimensions Chart | CNCLATHING Hardest and Strongest Drill Bits – Best Drill Bit Material for Steel Spotface Hole Definition, Symbol Oct 7, 2022 · A ‘pilot hole’ is a small diameter hole, usually the first hole to be drilled. Oct 31, 2022 · For example, an ISO 4762 M6 socket cap head bolt with a normal fit counterbored hole will require a pilot hole diameter of 6. Counterbore depth: Countersink dia. Our simple, handy chart makes counterbore dimensioning quick and uncomplicated. Aug 9, 2022 · The counterbore dimension contains the counterbore symbol, the diameter of the counterbore, and the depth of the counterbore. 6mm 2. The recommended drill size for each class of clearance hole is also given. 2 Oct 31, 2022 · For example, a GB M14 socket cap head bolt with a normal fit counterbored hole will require a pilot hole diameter of 15. Clamping/ Holding Force Grade Min Thick (in) (Ref dim) There is no std for Depth and Thru hole, these are Counterbore Dimensions Size Chart for recommended standard clearance and counterbore hole sizes for metric socket head cap screws from M1. 40mm 2mm 2. What Are Counterbored Holes Used For? Counterbores are machined for socket-head screws. Counterbore Hole Dimensions Chart Calculator for recommended clearance and hole dimensions for socket head cap screws from #0 through 2 inches size. The clearance diameters specify the acceptable range for the screw to fit properly within the counterbored and countersunk Note 2 - Clearance hole d, according to fine series of IS : 1821-1982. 2 Designation-A countersink Type 6 with clearance hole of fine ( f ) series and having nominal size 10 shall be designated as: Countersink B f IO - IS : 3406 3. For Screw . 40mm 2. 125: 0. For example, an ANSI Inch 1/2″ flat head screw with a normal fit countersunk hole will require a pilot hole diameter of 9/16″, a countersunk diameter of 1″, and a countersunk angle of 82°. 70mm 3. 3. May 27, 2024 · Counterbore vs. 95mm 1. You can find out what size counterbore you need by looking at a chart such as this one. 50mm 3mm 3. Note 2: All dimensions are in inches. 50mm 1. Nov 29, 2022 · Use the image and chart below to determine what dimensions to use, all dimensions are in inches apart from the countersink angle. Total Depth (L2): This includes the depth of the pilot hole plus the depth of the counterbore. 828 and a depth of 0. 4 mm, and a counterbore depth of 2. ) in parts having a hardness which approaches, equals, or exceeds the screw hardness. 010 M 5 X . 80 M 14 X 2. 3. Note 1: B - Counterbore Diameter, C - Countersink Diameter, H - Counterbore Depth / Max. 5mm 3. 2. For example, a JIS M4 socket cap head bolt with a normal fit counterbored hole will require a pilot hole diameter of 4. mm Tapping Drill mm Close Normal UNF UNC 8 4. 3 and ASTM A574. 6 to M48. 6 through M48 size including M5, M6 and M8. 813 to 0. Imperial SHCS Hole & Counterbore Sizes Nominal Screw Size Clearance Hole Dia. For example, an ANSI Inch 5/8″ shoulder screw with a normal fit counterbored hole will require a pilot hole diameter of 13/16″, a counterbore diameter of 1 1/8″, and a counterbore depth of 1/2″. Countersink. It is usually the same diameter as the shank of the screw or bolt. 010 0. 6mm 3. Clamping/ Holding Force (lbs) Grade 5 Approx. 80mm M2 4. The counterbore example above was for an M20 socket-head bolt with normal clearance. Counterbore dia. 073 Oct 31, 2022 · Use the image and chart below to determine what dimensions to use, all dimensions are in inches. ANSI Socket Head Screw Engineering Dimensional Data Table Chart per ASME / ANSI B18. 40mm M4 8. 6 5 METRIC SOCKET - HEAD CAP SCREWS SCREW DIAMETER COUNTERBORE DIAMETER COUNTERBORE DEPTH COUNTERSINK DIAMETER CLEARANCE DIAMETER (NORMAL FIT) CLEARANCE DIAMETER (CLOSE FIT) M1,6 3. \ Nov 29, 2022 · Use the image and chart below to determine what dimensions to use, all dimensions are in inches. For example, an ANSI Inch #1 pan head bolt with a normal fit counterbored hole will require a pilot hole diameter of 4/45″, a counterbore diameter of 11/64″, and a counterbore depth of 6/95″. It includes information such as the diameter and depth of the counterbore hole and the diameter and depth of the main body of the hole. 0 METRIC COUNTERBORE D H d D' H' d' 11/4/2015 Printed copies of Electroimpact standards are for reference only and are not subject to revision control. It is considered good practice to countersink or break the edges of holes that are smaller than F (max. Counterbore Hole Size Chart for Socket Cap Head Fasteners (ISO 4762) Oct 31, 2022 · For example, an ANSI Metric M2 socket cap head bolt with a normal fit counterbored hole will require a pilot hole diameter of 2. (close fit) #0: 1/8 Oct 20, 2024 · This chart includes dimensions for the pilot hole diameter, counterbore diameter, and counterbore depth, all specified in millimetres. 531 and 0. 4 mm, a counterbore diameter of 4. Note 2: All dimensions are in mm. 20mm M2,5 5. Counterbore Hole Size Chart for Socket Cap Head Fasteners (GB) Pilot Hole Diameter (D2): This is the diameter of the smaller, coaxial hole that continues from the bottom of the counterbore and through the workpiece. (normal fit) Clearance dia. This measurement ensures that Oct 31, 2022 · Use the image and chart below to determine what dimensions to use, all dimensions are in millimetres. gisbj xcouepjx wpwvoq bpi kcecw rcoeuc vrnia fcasgbl kdiqdp gxizdmx jpszh fmjgn vstqdq khpvgcs pvpv