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4-40 Hardware

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Mounting Fixings POST MOLD INSERT, ALUMINUM PPA-440-2 SI 1: $0.39 730In Stock	Mfr. Part No. PPA-440-2 Mouser Part No 153-PPA-440-2	SI	Mounting Fixings POST MOLD INSERT, ALUMINUM Learn More about SI press in inserts	Datasheet	730In Stock	$0.39 $0.278 $0.223 $0.201 View $0.186 $0.181 $0.171 $0.167 $0.161	Min.: 1 Mult.: 1
Screws & Fasteners NUT, PLAIN, STEEL S-440-3ZI PEM 1: $0.36 9,530In Stock	Mfr. Part No. S-440-3ZI Mouser Part No 153-S-440-3ZI	PEM	Screws & Fasteners NUT, PLAIN, STEEL Learn More about PEM s self clinching nuts	Datasheet	9,530In Stock	$0.36 $0.275 $0.249 $0.216 View $0.198 $0.187 $0.176 $0.167 $0.158	Min.: 1 Mult.: 1
Standoffs & Spacers #N/A SMTSO-440-10ET PEM 1: $1.35 146In Stock 10,000Expected 23/12/2026	Mfr. Part No. SMTSO-440-10ET Mouser Part No 153-SMTSO-440-10ET	PEM	Standoffs & Spacers #N/A Learn More about PEM smtso reelfast nuts spacers standoffs	Datasheet	146In Stock 10,000Expected 23/12/2026	Cut Tape $1.35 $1.01 $0.78 $0.735 Reel $0.626	Min.: 1 Mult.: 1 : 5,000
Standoffs & Spacers STANDOFF, STAINLESS SOS-6440-12 PEM 1: $0.95 691In Stock	Mfr. Part No. SOS-6440-12 Mouser Part No 153-SOS-6440-12	PEM	Standoffs & Spacers STANDOFF, STAINLESS Learn More about PEM so sos standoffs	Datasheet	691In Stock	$0.95 $0.713 $0.555 $0.523 View $0.511 $0.494 $0.477 $0.46 $0.453	Min.: 1 Mult.: 1
Mounting Fixings SPACER, KNURLED, STAINLESS STKC-440-4 SI 1: $0.82 1,019In Stock	Mfr. Part No. STKC-440-4 Mouser Part No 153-STKC-440-4	SI	Mounting Fixings SPACER, KNURLED, STAINLESS Learn More about SI molded in inserts	Datasheet	1,019In Stock	$0.82 $0.581 $0.466 $0.438 View $0.372 $0.356 $0.348 Quote	Min.: 1 Mult.: 1
Standoffs & Spacers THIN HEAD STANDOFF, 400 SS TSO4-440-125 PEM 1: $0.87 500In Stock	Mfr. Part No. TSO4-440-125 Mouser Part No 153-TSO4-440-125	PEM	Standoffs & Spacers THIN HEAD STANDOFF, 400 SS	Datasheet	500In Stock	$0.87 $0.62 $0.496 $0.446 View $0.415 $0.403 $0.38 $0.372 Quote	Min.: 1 Mult.: 1
Standoffs & Spacers .252 FEM FEM - CA 18146 Vicor 1: $10.45 4In Stock	Mfr. Part No. 18146 Mouser Part No 492-18146	Vicor	Standoffs & Spacers .252 FEM FEM - CA	Datasheet	4In Stock	$10.45 $8.30 $7.59 $7.32	Min.: 1 Mult.: 1
Standoffs & Spacers STDOFF.252 F FLOG 19122 Vicor 1: $72.35 1In Stock	Mfr. Part No. 19122 Mouser Part No 492-19122	Vicor	Standoffs & Spacers STDOFF.252 F FLOG		1In Stock	$72.35 $57.47 $52.52 $50.65	Min.: 1 Mult.: 1
Standoffs & Spacers STDOFF.453 M FLOG 20189 Vicor 1: $162.03 6In Stock	Mfr. Part No. 20189 Mouser Part No 492-20189	Vicor	Standoffs & Spacers STDOFF.453 M FLOG	Datasheet	6In Stock	$162.03 $128.76 $117.68 $117.67 View $113.50 Quote	Min.: 1 Mult.: 1
Mounting Fixings PANEL FASTENER,ASSY,LOW PROFIL PF31-440-30CN PEM 1: $3.06 845In Stock	Mfr. Part No. PF31-440-30CN Mouser Part No 153-PF31-440-30CN	PEM	Mounting Fixings PANEL FASTENER,ASSY,LOW PROFIL	Datasheet	845In Stock	$3.06 $2.83 $2.53 $2.37 View $2.29 $2.21 $2.13 $2.06 Quote	Min.: 1 Mult.: 1
Mounting Fixings PF52-440-0CN PEM 1: $2.85 5,008In Stock	Mfr. Part No. PF52-440-0CN Mouser Part No 153-PF52-440-0CN	PEM	Mounting Fixings	Datasheet	5,008In Stock	$2.85 $2.64 $2.36 $2.22 View $2.13 $2.06 $1.99 $1.92 Quote	Min.: 1 Mult.: 1
Screws & Fasteners STUD, FLUSH, STAINLESS FHS-440-5 PEM 1: $0.25 10,624In Stock	Mfr. Part No. FHS-440-5 Mouser Part No 153-FHS-440-5	PEM	Screws & Fasteners STUD, FLUSH, STAINLESS Learn More about PEM fh fha fhs self clinching threaded studs	Datasheet	10,624In Stock	$0.25 $0.182 $0.165 $0.143 View $0.132 $0.126 $0.113 $0.11 $0.104	Min.: 1 Mult.: 1
Screws & Fasteners SEELSKREW STD PH REC 4-40 THD 3/16"LG R4-40X3/16 2701 APM HEXSEAL 1: $0.88 8,019In Stock	Mfr. Part No. R4-40X3/16 2701 Mouser Part No 608-R4-40X3/162701	APM HEXSEAL	Screws & Fasteners SEELSKREW STD PH REC 4-40 THD 3/16"LG		8,019In Stock	$0.88 $0.696 $0.59 $0.542 View $0.501 $0.475 $0.451 $0.438 $0.418	Min.: 1 Mult.: 1
Screws & Fasteners 4-40X5/16", Phillips Pan Head, 18-8 Stainless Steel with Fluoro-Silicone O-Ring, Seal Screw R4-40X5/16 2615 APM HEXSEAL 1: $0.99 6,150In Stock	Mfr. Part No. R4-40X5/16 2615 Mouser Part No 608-R4-40X5/162615	APM HEXSEAL	Screws & Fasteners 4-40X5/16", Phillips Pan Head, 18-8 Stainless Steel with Fluoro-Silicone O-Ring, Seal Screw Learn More about APM HEXSEAL self sealing hardware	Datasheet	6,150In Stock	$0.99 $0.776 $0.709 $0.627 View $0.582 $0.552 $0.525 $0.508 $0.488	Min.: 1 Mult.: 1
Screws & Fasteners SEELSKREW FH REC 4-40 THD 5/16 SFR4-40X5/16 2701 APM HEXSEAL 1: $0.88 4,245In Stock	Mfr. Part No. SFR4-40X5/16 2701 Mouser Part No 608-SFR440X5162701	APM HEXSEAL	Screws & Fasteners SEELSKREW FH REC 4-40 THD 5/16 Learn More about APM HEXSEAL self sealing hardware		4,245In Stock	$0.88 $0.675 $0.615 $0.542 View $0.525 $0.471 $0.46	Min.: 1 Mult.: 1
Screws & Fasteners SFR4-40 x 3/8 2701 APM HEXSEAL 1: $0.73 4,982In Stock	Mfr. Part No. SFR4-40 x 3/8 2701 Mouser Part No 608-SFR4-40X3-82701	APM HEXSEAL	Screws & Fasteners		4,982In Stock	$0.73 $0.566 $0.544 $0.423 $0.403	Min.: 1 Mult.: 1
Standoffs & Spacers AL .625 M/F THRD 8402 Keystone Electronics 1: $0.75 7,284In Stock	Mfr. Part No. 8402 Mouser Part No 534-8402	Keystone Electronics	Standoffs & Spacers AL .625 M/F THRD Learn More about Keystone Electronics keystone mf threaded standoffs	Datasheet	7,284In Stock	$0.75 $0.748 $0.416 $0.277 $0.271	Min.: 1 Mult.: 1
Screws & Fasteners PEM KPS6-440-4 KPS6-440-4 PEM 1: $0.74 2,177In Stock	Mfr. Part No. KPS6-440-4 Mouser Part No 153-KPS6-440-4	PEM	Screws & Fasteners	Datasheet	2,177In Stock	$0.74 $0.571 $0.522 $0.459 View $0.425 $0.403 $0.383 $0.371 $0.353	Min.: 1 Mult.: 1
Standoffs & Spacers .375 FEM-FEM 6PC Vicor 20176 20176 Vicor 1: $15.76 10In Stock	Mfr. Part No. 20176 Mouser Part No 492-20176	Vicor	Standoffs & Spacers .375 FEM-FEM 6PC	Datasheet	10In Stock	$15.76 $11.07	Min.: 1 Mult.: 1
Standoffs & Spacers 4-40 SURFACE MOUNT STANDOFF ELECTRO-SOLDER (ES) REEL PEM SMTSO-440-4ES SMTSO-440-4ES PEM 1: $0.98 2,000In Stock	Mfr. Part No. SMTSO-440-4ES Mouser Part No 153-SMTSO-440-4ES	PEM	Standoffs & Spacers 4-40 SURFACE MOUNT STANDOFF ELECTRO-SOLDER (ES) REEL	Datasheet	2,000In Stock	Cut Tape $0.98 $0.729 $0.568 $0.535 Reel $0.488 View $0.523 $0.506 $0.47 $0.463 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Standoffs & Spacers HEX .250X2.00 ALUM 2207 Keystone Electronics 1: $1.68 7,112In Stock	Mfr. Part No. 2207 Mouser Part No 534-2207	Keystone Electronics	Standoffs & Spacers HEX .250X2.00 ALUM Learn More about Keystone Electronics keystone female threaded standoffs	Datasheet	7,112In Stock	$1.68 $1.45 $0.804 $0.74 $0.66	Min.: 1 Mult.: 1
Mounting Fixings MOLD-IN INSERT, BLIND, BRASS IBB-440-10 SI 1: $0.57 5,343In Stock	Mfr. Part No. IBB-440-10 Mouser Part No 153-IBB-440-10	SI	Mounting Fixings MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	5,343In Stock	$0.57 $0.398 $0.319 $0.287 View $0.266 $0.258 $0.244 $0.238 $0.23	Min.: 1 Mult.: 1
Standoffs & Spacers RND .250X.750 ALUM 3481 Keystone Electronics 1: $0.51 5,953In Stock	Mfr. Part No. 3481 Mouser Part No 534-3481	Keystone Electronics	Standoffs & Spacers RND .250X.750 ALUM Learn More about Keystone Electronics keystone female threaded standoffs	Datasheet	5,953In Stock	$0.51 $0.447 $0.293 $0.27 $0.254	Min.: 1 Mult.: 1
Standoffs & Spacers SS 4-40 3/8in 3/16in Round FEM Standoff 1635-440-SS RAF Electronic Hardware 1: $1.18 2,370In Stock 11Expected 18/12/2026	Mfr. Part No. 1635-440-SS Mouser Part No 761-1635-440-SS	RAF Electronic Hardware	Standoffs & Spacers SS 4-40 3/8in 3/16in Round FEM Standoff	Datasheet	2,370In Stock 11Expected 18/12/2026	$1.18 $0.882 $0.686 $0.647 View $0.608 $0.585 $0.569 $0.556 Quote	Min.: 1 Mult.: 1
Standoffs & Spacers M/F NYLON STANDOFF 4-40 .375 L 4941 Keystone Electronics 1: $0.72 13,371In Stock	Mfr. Part No. 4941 Mouser Part No 534-4941	Keystone Electronics	Standoffs & Spacers M/F NYLON STANDOFF 4-40 .375 L Learn More about Keystone Electronics keystone extreme temp standoffs	Datasheet	13,371In Stock	$0.72 $0.562 $0.541 $0.325 View $0.304 $0.301	Min.: 1 Mult.: 1

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