Home · FSC 5315 Nails, Machine Keys, And Pins · NSN 5315-00-177-3981

NSN 5315-00-177-3981 — Pin,Quick Release

NIIN 00-177-3981 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

NSN 5315-00-177-3981 is the national stock number for a pin,quick release in federal supply class 5315 (Nails, Machine Keys, And Pins). It cross-references to 10 manufacturer part numbers from 7 CAGE codes, including National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use, Avibank Mfg., Inc., Southco Inc.; the primary is BLC5LA20S. The unit of issue is EA and the FLIS list price is $22.25.

The U.S. government has bought this item 1 time on record, 1 of them in the last 24 months, most recently on September 2, 2026 for $2,313 from Century Fasteners Corp. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

part numbers from 7 CAGEs

open solicitations, all agencies

government buy in 24 months

sellers with confirmed stock

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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part number	CAGE	Manufacturer	Reference	Variation
MS17986C520	80205	National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use	3 · Design control (vendor)	2 · Fully interchangeable
BLC5LA20S	84256	Avibank Mfg., Inc.	5 · Secondary reference	2 · Fully interchangeable
BLC5R20S	84256	Avibank Mfg., Inc.	5 · Secondary reference	2 · Fully interchangeable
LG5CL2000	62060	Southco Inc.	5 · Secondary reference	9 · Reference only
LG5CL2000	83014	Hartwell Corporation	5 · Secondary reference	9 · Reference only
LG5CL2000	SV287	Southco, S. De R.L. De C.V	5 · Secondary reference	2 · Fully interchangeable
MS17986-520	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only
MS17986C520	96906	Military Standards Promulgated By Military Departments Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only
SLC5AL20	16258	Space-Lok, Inc.	5 · Secondary reference	2 · Fully interchangeable
BLS5LA20S	84256	Avibank Mfg., Inc.	E	8
LG5SL2000	83014	Hartwell Corporation	E	8
LG5SL20M	83014	Hartwell Corporation	E	8
MS17986-520	80205	National Aerospace Standards Committee Aerospace Industries Association Of America Inc Not For Rfq Or Solicitation Use	E	8
SLS5AL20	16258	Space-Lok, Inc.	E	8

Government demand

Nothing open right now. Last government buy Sep 2, 2026. Watch this NSN and we will email you when it is solicited.

What the government paid

Date	Vendor	Qty	Unit cost	Amount	Buyer	Reference
Sep 2, 2026	Century Fasteners Corp 8R639			$2,313	Dla	SPE4A626V274K » Award/Basic Package View

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 1 buy on record in total.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on BLC5LA20S.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price: $22.25
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

Shank Diameter: INCHES MINIMUM 0.3095 AND INCHES MAXIMUM 0.3110
Detent Quantity: 2
Actuation Method: PUSH BUTTON
Grip Length: INCHES MINIMUM 2.000 AND INCHES MAXIMUM 2.020
Actuation Type: PUSH
Hardness Rating: SHANK ROCKWELL C MINIMUM 40.0
Hardness Rating: SPINDLE ROCKWELL C MINIMUM 40.0
Shoulder To Head End Distance: INCHES MAXIMUM 1.270
Pin Center To Handle End Distance: INCHES MINIMUM 1.380 AND INCHES MAXIMUM 1.460
Pin Attachment Type: HOOK
Detent To Tapered End Distance: INCHES MINIMUM 0.300 AND INCHES MAXIMUM 0.330
Material: SHANK STEEL COMP 630 OR STEEL COMP 632
Material: SPINDLE STEEL COMP 630 OR STEEL COMP 632
Material Document And Classification: SPINDLE ASSN STD 1ST MATERIAL RESPONSE A-S 5643 OR ASSN STD 2ND MATERIAL RESPONSE A-S 5657
Material Document And Classification: SHANK ASSN STD 1ST MATERIAL RESPONSE A-S 5643 OR ASSN STD 2ND MATERIAL RESPONSE A-S 5657
Surface Treatment: SHANK PASSIVATE
Surface Treatment: SPINDLE PASSIVATE
Surface Treatment Document And Classification: SHANK FED SPEC SINGLE TREATMENT RESPONSE QQ--35

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.