Your QuoteCart(empty)

FASTENER SPECIFICATIONS - SAE (inch) DIMENSIONS


TOLERANCES (Except Screw Length - See Screw Length Tolerances Here)

All dimensions in inches unless otherwise specified.

Two Place Decimal . . . . . . . .±.010

Three Place Decimal . . . . . .±.005

Fractions . . . . . . . . . . . . . . .±1/64"


Note:

1. Up to 4" long all spacers and standoffs are kept to ±.005.

2. 4" to 6" long ±.008.

3. Over 6" long ±.010.


SPECIAL CLOSE TOLERANCES are available.
Just specify in the third stage of requesting a quote.

DIAMETER: Std Commercial Tolerances on bar & rod.


ROUND - COLD FINISHED: Under 5/16" . . . . . . . . . . . . .±.001"

5/16" to 1/2", incl. . . . . . . . . .±.0015

1/2" to 1", incl. . . . . . . . . . . .±.002


THREAD INFORMATION

Threaded spacers (standoffs) shall be tapped through when length 'L' is NOT longer than dimension shown below.

ThreadAluminum, Brass & Steel Nylon ('L')Stainless Steel ('L')
0-803/81/4
1-723/81/4
2-561/23/8
3-561/23/8
4-4013/4
4-4813/4
5-4013/4
6-3213/4
6-4013/4
8-3213/4
10-2413/4
10-3213/4
12-2413/4
1/4-201 1/41 1/4
1/4-281 1/41 1/4
5/16-181 1/41 1/4
5/16-241 1/41 1/4
3/8-161 1/41 1/4
3/8-241 1/41 1/4
7/16-141 1/41 1/4
7/16-201 1/41 1/4
1/2-131 1/41 1/4
1/2-201 1/41 1/4

The following table gives "Blind Tap Depths" when length 'L' IS LONGER THAN dimension shown in 'Reference' column below.

ThreadReference Length (all materials)Tap Depth
0-803/83/16
1-723/83/16
2-561/23/16
3-561/23/16
4-401/21/4
4-4811/4
5-4015/16
6-3213/8
6-4013/8
8-3217/16
10-2411/2
10-3211/2
12-2411/2
1/4-201 1/45/8
1/4-281 1/45/8
5/16-181 1/45/8<
5/16-241 1/45/8<
3/8-161 1/45/8
3/8-241 1/45/8
7/16-141 1/45/8
7/16-201 1/45/8
1/2-131 1/45/8
1/2-201 1/41 1/4

NOTES:

1.Threads are supplied cut or rolled at our option unless specifically noted on order.

2. Responsibility ends with customer inspection or 10 days after customer receives parts. No returns will be accepted without prior approval from factory in writing.

3. All parts are stocked in plain finish. Parts will be plated to customer specifications.

4. The items in this catalog are designed and manufactured to be functional. Engineering evaluation and quality assurance evaluations should be accomplished wih functionability as a prime criteria.

5. All threads are Class 2A and Class 2B Commercial, except Socket Head Cap Screws which are Class 3A Threads. Once plated will not enter 3A GO and NO GO GAGES.


MACHINE SCREW SPECS:


ECCENTRICITY:

The heads of machine screws shall not be eccentric with the body beyond a tolerance of 3 percent of the maximum head diameter.

SCREWDRIVER SLOT DIMENSIONS

(Unless otherwise specified)

Max. OD DiameterWH
Max.Min.Max.Min.
Up to .160.031.023.030.022
.161 to .182.035.027.034.026
.183 to .204.039.031.038.030
.205 to .225.039.031.042.025
.226 to .269.048.039.053.033
.270 to .312.054.045.074.052
.313 to .413.060.050.080.057
.414 and up.075.064.111.083

SCREW LENGTH TOLERANCE (ALL EXCEPT Socket Head Cap Screws):

(Get Socket Head Cap Screw Specs and Tolerances Here)

SCREWS WITHOUT LEAD POINT

NOMINAL SCREW SIZE0 - 121/4 - 3/4
NOMINAL SCREW LENGTHLength Tol.Length Tol.
Up to 1/2 in., incl.-0.02-0.03
Over 1/2 to 1 in., incl.-0.03-0.03
Over 1 to 2 in., incl.-0.06-0.06
Over 2 in.-0.09-0.09

LEAD POINT SCREWS ONLY

NOMINAL SCREW SIZE0 - 121/4 - 3/4
NOMINAL SCREW LENGTHLength Tol.Length Tol.
Up to 1/2 in., incl.-0.03-0.04
Over 1/2 to 1 in., incl.-0.04-0.04
Over 1 to 2 in., incl.-0.07-0.07
Over 2 in.-0.09-0.09