TT Miniature and Close-To-Edge Inch Self-clinching Standoffs

Features

Precisely stack mating panels in limited space and close-to-edge applications.
Self-clinching design provides simple, permanent installation in aluminum, carbon steel and stainless steel sheets.
Custom sizes available by request.

Loading Parts

General

Thread	Thread Code	Sheet			CMax.	DMin.	HNom.
Thread	Thread Code	Minimum Thickness	Hole Size	Minimum Distance Hole Center to Edge	CMax.	DMin.	HNom.
0-80 ⁽¹⁾	080	.012	.095-.097	.090	.094	.125	.125
2-56 ⁽¹⁾	256	.012	.125-.127	.120	.124	.200	.156
2-56 ⁽¹⁾	4256	.037	.166-.169	.126	.165	.200	.194
4-40 ⁽¹⁾	440	.037	.166-.169	.126	.165	.220	.194

(1) Unified threads per ASME B1.1, 2B.

Length

Thread Code	Length Code / Length
Thread Code	.094	.125	.187	.250	.275	.312	.375
080	.091-.096 ⁽¹⁾	.122 -.127 ⁽¹⁾	.184-.189 ⁽¹⁾	.247-.252 ⁽²⁾	.272-.277 ⁽²⁾	.309-.314 ⁽²⁾	.372-.377 ⁽³⁾
256	.091-.096 ⁽¹⁾	.122 -.127 ⁽¹⁾	.184-.189 ⁽¹⁾	.247-.252 ⁽¹⁾	.272-.277 ⁽²⁾	.309-.314 ⁽²⁾	.372-.377 ⁽²⁾
4256	.089 -.096 ⁽¹⁾	.120 -.127 ⁽¹⁾	.182-.189 ⁽¹⁾	.245-.252 ⁽¹⁾	.270-.277 ⁽²⁾	.307-.314 ⁽²⁾	.370-.377 ⁽²⁾
440	.089 -.096 ⁽¹⁾	.120 -.127 ⁽¹⁾	.182-.189 ⁽¹⁾	.245-.252 ⁽¹⁾	.270-.277 ⁽¹⁾	.307-.314 ⁽²⁾	.370-.377 ⁽²⁾

080.434-.439 (3)–––––

Thread Code	Length Code / Length
Thread Code	.437	.500	.562	.625	.687	.750
256	.434-.439 (3)	.497-.502 (3)	.559-.564 (3)	.622-.627 (3)	–	–
4256	.432-.439 (3)	.495-.502 (3)	.557-.564 (3)	.620-.627 (3)	.682-.689 (3)	.745-.752 (3)
440	.432-.439 (2)	.495-.502 (3)	.557-.564 (3)	.620-.627 (3)	.682-.689 (3)	.745-.752 (3)

(1) Type 1 (2) Type 2 (3) Type 3

Material & Finish

Material Code	Material Description	Finish Code	Finish Description	For Use in Sheet Hardness
Material Code	Material Description	Finish Code	Finish Description	HRB 70Max.	HRB 80Max.	HRB 88Max.
ST ⁽¹⁾	Heat Treated1215 Carbon Steel	Z	Zinc (SC1) with Type III Clear Chromate per ASTM B633		•
SS	300-Series Stainless Steel	P	Passivated and/orTested per ASTM A967	•
S4 ⁽²⁾	Heat Treated 400-SeriesStainless Steel	P	Passivated and/orTested per ASTM A967			•

(1)ST material code not available for maximum standoff body diameters .094” (2.39mm) and .124” (3.16mm). (2)S4 material code not available for maximum standoff body diameter .165” (4.20mm).

Installation

Prepare correct sized mounting hole in sheet. Do not deburr edges.
Insert standoff through hole in punch side of the sheet and into the anvil as shown.
Squeeze the sheet and standoff head between parallel anvil and punch surfaces. Use only enough pressure to seat the standoff head flush with the sheet.
Anvil with countersink is required for standoff with maximum body diameters.
For installation in stainless steel, the sheet should be annealed and avoid standoff installation next to bends or other highly cold-worked areas. The hole punch diameter should be no greater than .001” (0.025mm) over the minimum recommend- ed mounting hole diameter and kept sharp to minimize work hardening around the hole.

Anvil and Punch Dimensions

Standoff C Max.Dimension	A	B	Anvil Part Number	Punch Part Number
.094	.112-.114	.097-.099	TL1268	TL1287
.124	.142-.144	.127-.129	TL1269	TL1287
.165	–	.169-.172	TL1087	TL1287

Performance

Thread Code	Stand. Matl. Code	Test Sheet Thick- ness	Test Sheet Material
			5052-H34 Aluminum				Cold-rolled Steel				300-Series Stainless Steel
			Installation (lbs)	Push-out (lbs)	Torque- out(in-lbs) (2)	Pull- thru (lbs) (2)	Installation (lbs)	Push-out (lbs)	Torque- out(in-lbs) (2)	Pull- thru (lbs) (2)	Installation (lbs)	Push-out (lbs)	Torque- out(in-lbs) (2)	Pull- thru (lbs) (2)
080	SS	.013	–	–	–	–	900	20	1.2	40	(3)	(3)	(3)	(3)
	SS	.017	600	20	1.2	40	1000	35	1.6	74	(3)	(3)	(3)	(3)
	S4	.013	–	–	–	–	–	–	–	–	2500	33	1.3	78
	S4	.017	–	–	–	–	–	–	–	–	2500	45	2.2	78
256	SS	.013	–	–	–	–	1000	25	2.0	45	(3)	(3)	(3)	(3)
	SS	.017	700	25	2.0	45	1100	40	2.5	85	(3)	(3)	(3)	(3)
	S4	.013	–	–	–	–	–	–	–	–	2500	33	2.2	110
	S4	.017	–	–	–	–	–	–	–	–	2500	45	2.6	110
4256440	ST	.040	700	50	10	320	1100	75	10	357	(3)	(3)	(3)	(3)
4256440	SS	.040	700	50	10	320	1100	75	10	357	(3)	(3)	(3)	(3)

(1) Performance data represents the average result when all installation specifications are strictly followed. Variations in panel hole size, thickness, material and installation method will affect the loads. PENCOM strongly encourages testing in the application. (2) Torque-out and pull-thru performance may vary depending on the strength and type of screw being used. (3) Not recommended.