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4-40 Mounting Hardware

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Material	Mounting Hole Size	Length	Outside Diameter	Thread Size	Gender	Packaging
Mounting Hardware NUT, BROACHING, STAINLESS KFS2-440 PEM 1: S/ 2.49 128,180In Stock 88,000On Order	Mfr. Part # KFS2-440 Mouser Part # 153-KFS2-440	PEM	Mounting Hardware NUT, BROACHING, STAINLESS Learn More about PEM kf2 kfs2 broaching nuts	Datasheet	128,180In Stock 88,000On Order	S/ 2.49 S/ 1.79 S/ 1.44 S/ 1.29 View S/ 1.20 S/ 1.17 S/ 1.10 S/ 1.07 Quote	Min.: 1 Mult.: 1	Screws & Fasteners	Broaching Nut	Stainless Steel				4-40
Mounting Hardware NUT,BROACHING,STEEL,NO H.T. KF2-440-ET PEM 1: S/ 1.17 138,884In Stock	Mfr. Part # KF2-440-ET Mouser Part # 153-KF2-440-ET	PEM	Mounting Hardware NUT,BROACHING,STEEL,NO H.T. Learn More about PEM kf2 kfs2 broaching nuts	Datasheet	138,884In Stock	S/ 1.17 S/ 0.852 S/ 0.681 S/ 0.615 View S/ 0.572 S/ 0.553 S/ 0.522 S/ 0.51 S/ 0.494	Min.: 1 Mult.: 1	Screws & Fasteners	Broaching Nut	Steel				4-40
Mounting Hardware NUT, MINILOCK FEO-440-MD PEM 1: S/ 3.78 6,703In Stock	Mfr. Part # FEO-440-MD Mouser Part # 153-FEO-440-MD	PEM	Mounting Hardware NUT, MINILOCK	Datasheet	6,703In Stock	S/ 3.78 S/ 2.68 S/ 2.14 S/ 1.93 View S/ 1.64 S/ 1.60 Quote	Min.: 1 Mult.: 1	Screws & Fasteners	Lock Nut	Steel				4-40
Mounting Hardware SS LOW PROFILE NUT SMPS-440 PEM 1: S/ 1.40 27,148In Stock	Mfr. Part # SMPS-440 Mouser Part # 153-SMPS-440	PEM	Mounting Hardware SS LOW PROFILE NUT	Datasheet	27,148In Stock	S/ 1.40 S/ 1.00 S/ 0.802 S/ 0.724 View S/ 0.67 S/ 0.654 S/ 0.615 S/ 0.603 S/ 0.58	Min.: 1 Mult.: 1	Screws & Fasteners	Self Clinching	Steel				4-40
Mounting Hardware SMTRA440-9-6ET PEM 1: S/ 8.45 12,846In Stock 26,400On Order	Mfr. Part # SMTRA440-9-6ET Mouser Part # 153-SMTRA440-9-6ET	PEM	Mounting Hardware Learn More about PEM smtra rangle fasteners	Datasheet	12,846In Stock 26,400On Order On Order Ship Dates Mfr. #: SMTRA440-9-6ET Stock: 12,846 Can Ship Immediately On Order: 7,200 Expected 11/2/2026 19,200 Expected 12/30/2026 Factory Lead-Time: 28 Weeks	Cut Tape S/ 8.45 S/ 6.31 S/ 4.90 Reel S/ 4.59 MouseReel Available	Min.: 1 Mult.: 1 : 300	Screws & Fasteners	Right Angle Fastener	Steel				4-40		Reel, Cut Tape, MouseReel
Mounting Hardware NUT, MINILOCK, FILM ONLY FE-440-MD PEM 1: S/ 3.31 22,526In Stock	Mfr. Part # FE-440-MD Mouser Part # 153-FE-440-MD	PEM	Mounting Hardware NUT, MINILOCK, FILM ONLY	Datasheet	22,526In Stock	S/ 3.31 S/ 2.37 S/ 1.90 S/ 1.71 View S/ 1.59 S/ 1.55 S/ 1.46 S/ 1.42 Quote	Min.: 1 Mult.: 1	Screws & Fasteners	Lock Nut	Steel				4-40
Mounting Hardware NUT, MINI, NL FEX-440 PEM 1: S/ 2.76 9,550In Stock	Mfr. Part # FEX-440 Mouser Part # 153-FEX-440	PEM	Mounting Hardware NUT, MINI, NL	Datasheet	9,550In Stock	S/ 2.76 S/ 1.95 S/ 1.56 S/ 1.41 View S/ 1.30 S/ 1.27 S/ 1.19 S/ 1.17 Quote	Min.: 1 Mult.: 1	Screws & Fasteners	Self Clinching	Steel				4-40
Mounting Hardware PF52-440-0CN PEM 1: S/ 11.09 5,008In Stock	Mfr. Part # PF52-440-0CN Mouser Part # 153-PF52-440-0CN	PEM	Mounting Hardware	Datasheet	5,008In Stock	S/ 11.09 S/ 10.28 S/ 9.19 S/ 8.64 View S/ 8.29 S/ 8.02 S/ 7.75 S/ 7.47 Quote	Min.: 1 Mult.: 1	Screws & Fasteners	Captive Panel					4-40
Mounting Hardware FLOATER, ASSY, STAINLESS,NL AC-440-2 PEM 1: S/ 8.60 4,943In Stock	Mfr. Part # AC-440-2 Mouser Part # 153-AC-440-2	PEM	Mounting Hardware FLOATER, ASSY, STAINLESS,NL Learn More about PEM a4 ac as floating fasteners	Datasheet	4,943In Stock	S/ 8.60 S/ 6.42 S/ 5.02 S/ 4.71 View S/ 4.55 S/ 4.44 S/ 4.28 S/ 4.13 Quote	Min.: 1 Mult.: 1	Screws & Fasteners	Non-Locking	Stainless Steel			9.14 mm	4-40	Female
Mounting Hardware FLOATER, ASSY, STAINLESS,NL AC-440-1 PEM 1: S/ 8.56 4,893In Stock	Mfr. Part # AC-440-1 Mouser Part # 153-AC-440-1	PEM	Mounting Hardware FLOATER, ASSY, STAINLESS,NL Learn More about PEM a4 ac as floating fasteners	Datasheet	4,893In Stock	S/ 8.56 S/ 6.42 S/ 4.98 S/ 4.71 View S/ 4.55 S/ 4.40 S/ 4.24 S/ 4.13 Quote	Min.: 1 Mult.: 1	Screws & Fasteners	Non-Locking	Stainless Steel			9.14 mm	4-40	Female
Mounting Hardware HI-TORQUE INSERT, BRASS IUTFB-440 SI 1: S/ 1.87 9,989In Stock	Mfr. Part # IUTFB-440 Mouser Part # 153-IUTFB-440	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9,989In Stock	S/ 1.87 S/ 1.31 S/ 1.05 S/ 0.946 View S/ 0.864 S/ 0.852 S/ 0.802 S/ 0.786 S/ 0.759	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.158 in	0.226 in	0.218 in	4-40		Bulk
Mounting Hardware PANEL FASTENER,ASSY,LOW PROFIL PF32-440-30CN PEM 1: S/ 11.68 4,810In Stock	Mfr. Part # PF32-440-30CN Mouser Part # 153-PF32-440-30CN	PEM	Mounting Hardware PANEL FASTENER,ASSY,LOW PROFIL	Datasheet	4,810In Stock	S/ 11.68 S/ 10.82 S/ 9.65 S/ 9.07 View S/ 8.76 S/ 8.45 S/ 8.17 S/ 7.86 Quote	Min.: 1 Mult.: 1	Screws & Fasteners	Captive Panel					4-40
Mounting Hardware ULTRASONIC INSERT, ALUM IUA-440-1 SI 1: S/ 1.01 1,426In Stock	Mfr. Part # IUA-440-1 Mouser Part # 153-IUA-440-1	SI	Mounting Hardware ULTRASONIC INSERT, ALUM Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	1,426In Stock	S/ 1.01 S/ 0.732 S/ 0.588 S/ 0.529 View S/ 0.49 S/ 0.475 S/ 0.448 S/ 0.44 S/ 0.424	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	0.153 in	0.135 in	0.172 in	4-40
Mounting Hardware HI-TORQUE INSERT, BRASS .135X.152 4-40 THREAD ULTRASONIC HEAT STAKING DIAGONAL IUTB-440-135 SI 1: S/ 1.17 5,598In Stock	Mfr. Part # IUTB-440-135 Mouser Part # 153-IUTB-440-135	SI	Mounting Hardware HI-TORQUE INSERT, BRASS .135X.152 4-40 THREAD ULTRASONIC HEAT STAKING DIAGONAL Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	5,598In Stock	S/ 1.17 S/ 0.817 S/ 0.654 S/ 0.615 View S/ 0.518 S/ 0.498 S/ 0.487 S/ 0.471	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.158 in	0.135 in		4-40
Mounting Hardware MOLD-IN INSERT, BLIND, BRASS IBB-440-8 SI 1: S/ 1.79 1,935In Stock	Mfr. Part # IBB-440-8 Mouser Part # 153-IBB-440-8	SI	Mounting Hardware MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	1,935In Stock	S/ 1.79 S/ 1.29 S/ 1.04 S/ 0.93 View S/ 0.864 S/ 0.841 S/ 0.794 S/ 0.775 S/ 0.747	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass		0.344 in	0.188 in	4-40
Mounting Hardware ULTRASONIC INSERT, BRASS IUB-440-1 SI 1: S/ 0.856 9,774In Stock	Mfr. Part # IUB-440-1 Mouser Part # 153-IUB-440-1	SI	Mounting Hardware ULTRASONIC INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	9,774In Stock	S/ 0.856 S/ 0.603 S/ 0.483 S/ 0.455 View S/ 0.381 S/ 0.366 S/ 0.358 S/ 0.346	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.153 in	0.135 in	0.172 in	4-40
Mounting Hardware HI-TORQUE INSERT, BRASS IUTB-440 SI 1: S/ 1.28 8,415In Stock	Mfr. Part # IUTB-440 Mouser Part # 153-IUTB-440	SI	Mounting Hardware HI-TORQUE INSERT, BRASS Learn More about SI standard inserts ultrasonic heat staking inserts	Datasheet	8,415In Stock	S/ 1.28 S/ 0.887 S/ 0.712 S/ 0.662 View S/ 0.557 S/ 0.541 S/ 0.529 S/ 0.514	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Brass	0.158 in	0.226 in	0.179 in	4-40
Mounting Hardware POST MOLD FLANGE INSERT BRASS PFLB-440-1 SI 1: S/ 1.87 1,848In Stock	Mfr. Part # PFLB-440-1 Mouser Part # 153-PFLB-440-1	SI	Mounting Hardware POST MOLD FLANGE INSERT BRASS Learn More about SI press in inserts	Datasheet	1,848In Stock	S/ 1.87 S/ 1.33 S/ 1.06 S/ 0.958 View S/ 0.887 S/ 0.864 S/ 0.814 S/ 0.794 S/ 0.771	Min.: 1 Mult.: 1	Inserts	Threaded Insert			0.166 in	0.219 in	4-40
Mounting Hardware FLOATER,ASSEMBLY,LOCKING,S/S LAC-440-2MD PEM 1: S/ 9.93 5,534In Stock	Mfr. Part # LAC-440-2MD Mouser Part # 153-LAC-440-2MD	PEM	Mounting Hardware FLOATER,ASSEMBLY,LOCKING,S/S	Datasheet	5,534In Stock	S/ 9.93 S/ 7.40 S/ 5.76 S/ 5.45 View S/ 5.33 S/ 5.14 S/ 4.94 Quote	Min.: 1 Mult.: 1	Screws & Fasteners	Lock Nut	Stainless Steel				4-40
Mounting Hardware THERMOPLASTIC INSERT,STAINLESS NFPC-440 SI 1: S/ 2.53 645In Stock	Mfr. Part # NFPC-440 Mouser Part # 153-NFPC-440	SI	Mounting Hardware THERMOPLASTIC INSERT,STAINLESS Learn More about SI press in inserts	Datasheet	645In Stock	S/ 2.53 S/ 1.79 S/ 1.43 S/ 1.35 View S/ 1.14 S/ 1.09 S/ 1.07 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel	0.187 in	0.23 in	0.187 in	4-40
Mounting Hardware STUD, CONCEALED, STAINLESS CHC-440-6 PEM 1: S/ 2.30 354In Stock	Mfr. Part # CHC-440-6 Mouser Part # 153-CHC-440-6	PEM	Mounting Hardware STUD, CONCEALED, STAINLESS	Datasheet	354In Stock	S/ 2.30 S/ 1.63 S/ 1.30 S/ 1.23 View S/ 1.04 S/ 0.996 S/ 0.973 Quote	Min.: 1 Mult.: 1	Standoffs & Spacers	Self Retaining	Stainless Steel		4.7 mm	5.2 mm	4-40
Mounting Hardware THERMOPLASTIC INSERT,ALUMINUM NFPA-440 SI 1: S/ 1.79 2,322In Stock	Mfr. Part # NFPA-440 Mouser Part # 153-NFPA-440	SI	Mounting Hardware THERMOPLASTIC INSERT,ALUMINUM Learn More about SI press in inserts	Datasheet	2,322In Stock	S/ 1.79 S/ 1.30 S/ 1.04 S/ 0.934 View S/ 0.868 S/ 0.845 S/ 0.794 S/ 0.779 S/ 0.751	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Aluminum	0.187 in	0.23 in	0.187 in	4-40
Mounting Hardware MOLD-IN INSERT, BLIND, BRASS IBB-440-4 SI 1: S/ 1.48 710In Stock	Mfr. Part # IBB-440-4 Mouser Part # 153-IBB-440-4	SI	Mounting Hardware MOLD-IN INSERT, BLIND, BRASS Learn More about SI molded in inserts	Datasheet	710In Stock	S/ 1.48 S/ 1.02 S/ 0.821 S/ 0.775 View S/ 0.654 S/ 0.627 S/ 0.611 S/ 0.592	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Leaded Brass		0.205 in	0.188 in	4-40
Mounting Hardware POST MOLD INSERT, BRASS PKB-440 SI 1: S/ 2.34 1,028In Stock 10,000Expected 2/12/2027	Mfr. Part # PKB-440 Mouser Part # 153-PKB-440	SI	Mounting Hardware POST MOLD INSERT, BRASS Learn More about SI press in inserts	Datasheet	1,028In Stock 10,000Expected 2/12/2027	S/ 2.34 S/ 1.67 S/ 1.34 S/ 1.21 View S/ 1.12 S/ 1.09 S/ 1.03 S/ 1.00 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert			0.188 in	0.156 in	4-40
Mounting Hardware SPACER, KNURLED, STAINLESS STKC-440-4 SI 1: S/ 3.19 999In Stock	Mfr. Part # STKC-440-4 Mouser Part # 153-STKC-440-4	SI	Mounting Hardware SPACER, KNURLED, STAINLESS Learn More about SI molded in inserts	Datasheet	999In Stock	S/ 3.19 S/ 2.26 S/ 1.81 S/ 1.70 View S/ 1.45 S/ 1.39 S/ 1.35 Quote	Min.: 1 Mult.: 1	Inserts	Threaded Insert	Stainless Steel		0.125 in	0.188 in	4-40